color toggle now Alt-Tab instead of F6

config.def.h

@@ -196,7 +196,7 @@ static Shortcut shortcuts[] = {
 	{ MODKEY|ShiftMask,     XK_V,           clippaste,      {.i =  0} },
 	{ MODKEY,               XK_Num_Lock,    numlock,        {.i =  0} },
 	{ MODKEY,               XK_Control_L,   iso14755,       {.i =  0} },
-  { XK_ANY_MOD,           XK_F6,          swapcolors,     {.i =  0} },
+  { MODKEY,           XK_Tab,          swapcolors,     {.i =  0} },
 	{ ShiftMask,            XK_Page_Up,     kscrollup,      {.i = -1} },
 	{ ShiftMask,            XK_Page_Down,   kscrolldown,    {.i = -1} },
 };