Desktop Icons become ugly After using Rebuild Icons Feature in Tweak UI

I have installed Tweak UI on my Computer running Windows XP Professional Edition.
After using the Rebuild Icons feature in Tweak UI the icons become so ugly (such as the 16 color mode).
Take the look of older windows version such as Window 95 or maybe a bit older than this. It turns my icons into a lower resolution maybe Tweak UI made changes to my screen resolution but that would be my assumption.
I capture some of the icons for you to look at.
Here are the ugly icons after using the Rebuild Icons Feature in Tweak UI.

I have rebooted my computer thinking that the effect would change after restarting my computer, but nothing happens.
Instead of rebuilding my Windows XP icon to make it more attractive the result was opposite.
