right click on ur desktop and click properties
than go to the appearance tab and u can change the windows and buttons, color schemes, and font size there.
there are only 3 colours and i dunno if u can get more....
hope this helps ^^
o btw, does anyone kno if u can import colors for the taskbar? or do u have to dl a skin changer prog? its just that a skin changer prog laggggs my laptop A LOT.