diff --git a/Makefile.in b/Makefile.in
index f29a06e..e3ab8a8 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -27,6 +27,7 @@ src/systray.c \
 src/tag.c \
 src/util.c \
 src/viwmfs.c \
+src/color.c \
 src/wmfs.c
 
 # flags
diff --git a/src/barwin.c b/src/barwin.c
index 13ce885..49f7eb8 100644
--- a/src/barwin.c
+++ b/src/barwin.c
@@ -82,10 +82,10 @@ barwin_create(Window parent,
      {
           bw->bord = True;
 
-          CWIN(bw->border.left, bw->win, 0, 0, SHADH, h, 0, CWBackPixel, color_enlight(bg), &at);
-          CWIN(bw->border.top, bw->win, 0, 0, w, SHADH, 0, CWBackPixel, color_enlight(bg), &at);
-          CWIN(bw->border.bottom, bw->win, 0, h - SHADH, w, SHADH, 0, CWBackPixel, SHADC, &at);
-          CWIN(bw->border.right, bw->win, w - SHADH, 0, SHADH, h, 0, CWBackPixel, SHADC, &at);
+          CWIN(bw->border.left, bw->win, 0, 0, SHADH, h, 0, CWBackPixel, bg, &at);
+          CWIN(bw->border.top, bw->win, 0, 0, w, SHADH, 0, CWBackPixel, bg, &at);
+          CWIN(bw->border.bottom, bw->win, 0, h - SHADH, w, SHADH, 0, CWBackPixel, bg, &at);
+          CWIN(bw->border.right, bw->win, w - SHADH, 0, SHADH, h, 0, CWBackPixel, bg, &at);
      }
 
      /* Property */
@@ -95,8 +95,8 @@ barwin_create(Window parent,
      bw->geo.height = h;
      bw->bg = bg;
      bw->fg = fg;
-     bw->border.light = color_enlight(bg);
-     bw->border.dark = SHADC;
+     bw->border.light = color_shade(bg, conf.colors.bar_light_shade);
+     bw->border.dark = color_shade(bg, conf.colors.bar_dark_shade);
      bw->stipple = stipple;
      bw->stipple_color = -1;
 
@@ -299,10 +299,10 @@ barwin_refresh_color(BarWindow *bw)
 
      if(bw->bord)
      {
-          XSetWindowBackground(dpy, bw->border.left, bw->border.light);
-          XSetWindowBackground(dpy, bw->border.top, bw->border.light);
-          XSetWindowBackground(dpy, bw->border.bottom, bw->border.dark);
-          XSetWindowBackground(dpy, bw->border.right, bw->border.dark);
+          XSetWindowBackground(dpy, bw->border.left, color_shade(bw->bg, conf.colors.bar_light_shade));
+          XSetWindowBackground(dpy, bw->border.top, color_shade(bw->bg, conf.colors.bar_light_shade));
+          XSetWindowBackground(dpy, bw->border.bottom, color_shade(bw->bg, conf.colors.bar_dark_shade));
+          XSetWindowBackground(dpy, bw->border.right, color_shade(bw->bg, conf.colors.bar_dark_shade));
 
           XClearWindow(dpy, bw->border.left);
           XClearWindow(dpy, bw->border.top);
diff --git a/src/color.c b/src/color.c
new file mode 100644
index 0000000..cd77454
--- /dev/null
+++ b/src/color.c
@@ -0,0 +1,229 @@
+/*
+*      color.c
+*      Copyright © 2011 Brian Mock <mock.brian@gmail.com>
+*      All rights reserved.
+*
+*      Redistribution and use in source and binary forms, with or without
+*      modification, are permitted provided that the following conditions are
+*      met:
+*
+*      * Redistributions of source code must retain the above copyright
+*        notice, this list of conditions and the following disclaimer.
+*      * Redistributions in binary form must reproduce the above
+*        copyright notice, this list of conditions and the following disclaimer
+*        in the documentation and/or other materials provided with the
+*        distribution.
+*      * Neither the name of the  nor the names of its
+*        contributors may be used to endorse or promote products derived from
+*        this software without specific prior written permission.
+*
+*      THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+*      "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+*      LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+*      A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+*      OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+*      SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+*      LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+*      DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+*      THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+*      (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+*      OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include "wmfs.h"
+
+static void   color_unpack_rgb(uint, uint*, uint*, uint*);
+static void   color_rgb_to_hsl(uint, uint, uint, double*, double*, double*);
+static void   color_hsl_to_rgb(double, double, double, uint*, uint*, uint*);
+static double color_clamp(double, double, double);
+static uint   color_pack_rgb(uint, uint, uint);
+
+/** Shades a color by the amount. This works by converting a packed RGB
+ * color to HSL, adding the amount to the lightness,
+ * and then converting back to RGB. 1.0 is max lightness, 0.0 is min lightness.
+ * \param shadeVal the amount to shade the lightness by.
+ * \return the shaded color
+ */
+uint
+color_shade(uint rgb, double shadeVal)
+{
+    uint   r, g, b;
+    double h, s, l;
+
+    color_unpack_rgb(rgb, &r, &g, &b);
+    color_rgb_to_hsl(r, g, b, &h, &s, &l);
+
+    l += shadeVal;
+
+    l = color_clamp(l, 0, 1);
+
+    color_hsl_to_rgb(h, s, l, &r, &g, &b);
+    rgb = color_pack_rgb(r, g, b);
+
+    return rgb;
+}
+
+/** Clamp a number x within the range [a, b].
+ * \param x the number which to clamp
+ * \param a the lowest possible value
+ * \param b the highest possible value
+ * \return the clamped number
+ */
+static double
+color_clamp(double x, double a, double b)
+{
+    if(x < a)
+        return a;
+    else if(x > b)
+        return b;
+    else
+        return x;
+}
+
+/** Pack a triplet of RGB values into a single uint
+ * \param r the red value
+ * \param g the green value
+ * \param b the blue value
+ * \return the packed RGB value
+ */
+static uint
+color_pack_rgb(uint r, uint g, uint b)
+{
+    return (r << 16) | (g << 8) | b;
+}
+
+/** Unpack an RGB uint into three separate values
+ * \param rgb the packed color
+ * \param r a pointer to a uint where the red value will be stored
+ * \param g a pointer to a uint where the green value will be stored
+ * \param b a pointer to a uint where the blue value will be stored
+ */
+static void
+color_unpack_rgb(uint rgb, uint *r, uint *g, uint *b)
+{
+    *r = (rgb >> 16) & 0xFF;
+    *g = (rgb >>  8) & 0xFF;
+    *b =  rgb        & 0xFF;
+}
+
+/** Convert unpacked RGB values into HSL, storing in the doubles referenced
+ * by the pointers h, s, l
+ */
+static void
+color_rgb_to_hsl(uint xr, uint xg, uint xb, double *h, double *s, double *l)
+{
+    double r = xr/255.0;
+    double g = xg/255.0;
+    double b = xb/255.0;
+
+    double v;
+    double m;
+    double vm;
+    double r2, g2, b2;
+
+    *h = 0;
+    *s = 0;
+    *l = 0;
+
+    /* v is max(r, g, b)
+     * m is min(r, g, b)
+     */
+    v = r > g ? r : g;
+    v = v > b ? v : b;
+    m = r < g ? r : g;
+    m = m < b ? m : b;
+
+    *l = (m + v)/2.0;
+
+    if(*l <= 0.0)
+        return;
+
+    vm = v - m;
+    *s = vm;
+
+    if(*s > 0.0)
+        *s /= (*l <= 0.5) ? (v + m) : (2.0 - v - m);
+    else
+        return;
+
+    r2 = (v - r)/vm;
+    g2 = (v - g)/vm;
+    b2 = (v - b)/vm;
+
+    if(r == v)
+        *h = (g == m ? 5.0 + b2 : 1.0 - g2);
+    else if(g == v)
+        *h = (b == m ? 1.0 + r2 : 3.0 - b2);
+    else
+        *h = (r == m ? 3.0 + g2 : 5.0 - r2);
+
+    *h /= 6.0;
+}
+
+/** Convert h, s, l values to RGB and store them in the three uint
+ * referenced by the last three parameters.
+ */
+static void
+color_hsl_to_rgb(double h, double sl, double l, uint *rx, uint *gx, uint *bx)
+{
+    double v;
+    double r,g,b;
+
+    r = l;
+    g = l;
+    b = l;
+    v = (l <= 0.5) ? (l * (1.0 + sl)) : (l + sl - l * sl);
+    if(v > 0)
+    {
+        double m;
+        double sv;
+        int    sextant;
+        double fract, vsf, mid1, mid2;
+
+        m = l + l - v;
+        sv = (v - m ) / v;
+        h *= 6.0;
+        sextant = (int) h;
+        fract = h - sextant;
+        vsf = v * sv * fract;
+        mid1 = m + vsf;
+        mid2 = v - vsf;
+        switch(sextant)
+        {
+            case 0:
+                r = v;
+                g = mid1;
+                b = m;
+                break;
+            case 1:
+                r = mid2;
+                g = v;
+                b = m;
+                break;
+            case 2:
+                r = m;
+                g = v;
+                b = mid1;
+                break;
+            case 3:
+                r = m;
+                g = mid2;
+                b = v;
+                break;
+            case 4:
+                r = mid1;
+                g = m;
+                b = v;
+                break;
+            case 5:
+                r = v;
+                g = m;
+                b = mid2;
+                break;
+        }
+    }
+
+    *rx = r * 255.0;
+    *gx = g * 255.0;
+    *bx = b * 255.0;
+}
diff --git a/src/config.c b/src/config.c
index 264b87f..2d7c74d 100644
--- a/src/config.c
+++ b/src/config.c
@@ -203,6 +203,9 @@ conf_bar_section(void)
      conf.colors.bar  = getcolor((barbg = fetch_opt_first(bar, "#000000", "bg").str));
      conf.colors.text = fetch_opt_first(bar, "#ffffff", "fg").str;
 
+     conf.colors.bar_light_shade = fetch_opt_first(bar, "0.25", "light_shade").fnum;
+     conf.colors.bar_dark_shade  = fetch_opt_first(bar, "-0.25", "dark_shade").fnum;
+
      mouse = fetch_section(bar, "mouse");
 
      if ((conf.bars.nmouse = fetch_section_count(mouse)) > 0)
@@ -301,6 +304,9 @@ conf_client_section(void)
      conf.client.default_open_screen  = fetch_opt_first(sec, "-1", "default_open_screen").num;
      conf.client.new_client_get_mouse = fetch_opt_first(sec, "false", "new_client_get_mouse").bool;
 
+     conf.colors.client_light_shade = fetch_opt_first(sec, "0.25", "light_shade").fnum;
+     conf.colors.client_dark_shade  = fetch_opt_first(sec, "-0.25", "dark_shade").fnum;
+
      mouse = fetch_section(sec, "mouse");
 
      if((conf.client.nmouse = fetch_section_count(mouse)) > 0)
@@ -789,12 +795,12 @@ conf_keybind_section(void)
 void
 init_conf(void)
 {
-     if (get_conf(conf.confpath) == -1)
+     if(get_conf(conf.confpath) == -1)
      {
           warnx("parsing configuration file (%s) failed.", conf.confpath);
           sprintf(conf.confpath, "%s/wmfs/wmfsrc", XDG_CONFIG_DIR);
           warnx("Use the default configuration (%s).", conf.confpath);
-          if (get_conf(conf.confpath) == -1)
+          if(get_conf(conf.confpath) == -1)
                errx(1, "parsing configuration file (%s) failed.", conf.confpath);
 
      }
diff --git a/src/frame.c b/src/frame.c
index 9dd8f52..22d7ff8 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -118,10 +118,10 @@ frame_create(Client *c)
      /* Border (for shadow) */
      if(conf.client.border_shadow)
      {
-          CWIN(c->left, c->frame, 0, 0, SHADH, c->frame_geo.height, 0, CWBackPixel, color_enlight(c->colors.frame), &at);
-          CWIN(c->top, c->frame, 0, 0, c->frame_geo.width, SHADH, 0, CWBackPixel, color_enlight(c->colors.frame), &at);
-          CWIN(c->bottom, c->frame, 0, c->frame_geo.height - SHADH, c->frame_geo.width, SHADH, 0, CWBackPixel, SHADC, &at);
-          CWIN(c->right, c->frame, c->frame_geo.width - SHADH, 0, SHADH, c->frame_geo.height, 0, CWBackPixel, SHADC, &at);
+          CWIN(c->left, c->frame, 0, 0, SHADH, c->frame_geo.height, 0, CWBackPixel, c->colors.frame, &at);
+          CWIN(c->top, c->frame, 0, 0, c->frame_geo.width, SHADH, 0, CWBackPixel, c->colors.frame, &at);
+          CWIN(c->bottom, c->frame, 0, c->frame_geo.height - SHADH, c->frame_geo.width, SHADH, 0, CWBackPixel, c->colors.frame, &at);
+          CWIN(c->right, c->frame, c->frame_geo.width - SHADH, 0, SHADH, c->frame_geo.height, 0, CWBackPixel, c->colors.frame, &at);
      }
 
      /* Reparent window with the frame */
@@ -258,10 +258,10 @@ frame_update(Client *c)
 
      if(conf.client.border_shadow)
      {
-          XSetWindowBackground(dpy, c->left, color_enlight(c->colors.frame));
-          XSetWindowBackground(dpy, c->top, color_enlight(c->colors.frame));
-          XSetWindowBackground(dpy, c->right, SHADC);
-          XSetWindowBackground(dpy, c->bottom, SHADC);
+          XSetWindowBackground(dpy, c->left, color_shade(c->colors.frame, conf.colors.client_light_shade));
+          XSetWindowBackground(dpy, c->top, color_shade(c->colors.frame, conf.colors.client_light_shade));
+          XSetWindowBackground(dpy, c->right, color_shade(c->colors.frame, conf.colors.client_dark_shade));
+          XSetWindowBackground(dpy, c->bottom, color_shade(c->colors.frame, conf.colors.client_dark_shade));
 
           XClearWindow(dpy, c->left);
           XClearWindow(dpy, c->top);
diff --git a/src/structs.h b/src/structs.h
index 1ee0aa9..cf540f2 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -410,6 +410,10 @@ typedef struct
           uint tagbord;
           char *layout_fg;
           uint layout_bg;
+          float client_light_shade;
+          float client_dark_shade;
+          float bar_light_shade;
+          float bar_dark_shade;
      } colors;
      struct
      {
diff --git a/src/util.c b/src/util.c
index 59cbe61..cbc1382 100644
--- a/src/util.c
+++ b/src/util.c
@@ -142,21 +142,6 @@ getcolor(char *color)
      return xcolor.pixel;
 }
 
-/** Enlight an hexadecimal color
- * \param col Color
- * \return The clarified color
-*/
-ulong
-color_enlight(ulong col)
-{
-     if((col + 0x330000) < 0xffffff
-        && (col + 0x003300) < 0xffffff
-        && (col + 0x000033) < 0xffffff)
-          return col + 0x333333;
-     else
-          return col;
-}
-
 /** Set the window WM State
  * \param win Window target
  * \param state WM State
diff --git a/src/wmfs.h b/src/wmfs.h
index e7955e5..46b6c47 100644
--- a/src/wmfs.h
+++ b/src/wmfs.h
@@ -86,7 +86,6 @@
 #define INFOBARH     ((conf.bars.height > 0) ? conf.bars.height : (font->height * 1.5))
 #define FHINFOBAR    ((font->height - font->descent) + (INFOBARH - font->height) / 2)
 #define SHADH        (1)
-#define SHADC        (0x000000) /* 'Cause i don't know how darken a color yet */
 #define BORDH        conf.client.borderheight
 #define TBARH        ((conf.titlebar.height < BORDH) ? BORDH : conf.titlebar.height)
 #define RESHW        (6 * (BORDH))
@@ -233,6 +232,9 @@ void frame_update(Client *c);
 /* config.c */
 void init_conf(void);
 
+/* color.c */
+uint color_shade(uint, double);
+
 /* event.c */
 void buttonpress(XButtonEvent *ev);
 void configureevent(XConfigureRequestEvent *ev);
@@ -289,7 +291,6 @@ void *xrealloc(void *, size_t, size_t);
 #define zrealloc(ptr, size) xrealloc((ptr), 1, (size))
 char *xstrdup(const char *);
 int xasprintf(char **, const char *, ...);
-ulong color_enlight(ulong col);
 long getcolor(char *color);
 void setwinstate(Window win, long state);
 /* Conf usage {{{ */
diff --git a/wmfsrc b/wmfsrc
index 0f7d3c2..9b76d00 100644
--- a/wmfsrc
+++ b/wmfsrc
@@ -26,6 +26,9 @@
         border = true
         #height = "-1"
 
+        light_shade =  0.10
+        dark_shade  = -0.10
+
         [systray]
                 # Enable/disable systray
                 active = true
@@ -189,6 +192,9 @@
         # Modifier for mouse use
         modifier = "Alt"
 
+        light_shade =  0.10
+        dark_shade  = -0.10
+
         # *DEPRECATED* but works, see [rules] section
         # Set automatic free or max client
         # autofree = "xterm|MPlayer"