Hi Cammy,
Sorry for taking long to reply. First of all thank you very much for your help. I wouldn't have managed without!

However I do not know if you know this, but colors are set differently by ClickMeFor16Colours then they are in Classic Workbench. For example, black in Classic Workbench is set as 0, 0, 0 while with ClickMeFor16Colours this is set as 1, 1, 1.
I copied the color values from Classic Workbench and now small bench icons are shown in their full splendor. Just with ClickMeFor16Colours values they still look good, just not that good! I do not know if you knew about this or maybe I did something wrong.