Increased contrast in default color set

config.def.h

@@ -14,9 +14,9 @@ static const char * const BAR_FONT = "-*-fixed-medium-r-*-*-13-*-*-*-*-60-*-*";
 /* colors:
  * (see X(7) section "COLOR NAMES" for valid values)
  */
-static const char * const WIN_BG_COLOR = "#777777";
+static const char * const WIN_BG_COLOR = "#555555";
 static const char * const WIN_FS_COLOR = "#000000";
-static const char * const SEL_COLOR    = "#DDDDDD";
+static const char * const SEL_COLOR    = "#EEEEEE";
 static const char * const BAR_BG_COLOR = "#222222";
 static const char * const BAR_FG_COLOR = "#EEEEEE";