Question

[bloodshed]

I installed a skin and it works but the only problem is whenever I zoom out they unit changes color or something. I dont know where the problem is. Which file would it have to deal with?

[Jubal_Barca]

In Descr_Model_Battle.txt find the unit, put a semicolon ';' before the 'sprite' line. That should fix it.

[Isnogood]

What he said,
or,
if you're using skins from any mod, chances are good, there already are sprites, so you have to change the according entries in the d_m_b and copy the sprites from the mods sprite-folder, to the RTW-version you are using.

[Squid]

Or if there are no sprites, you can use the RTW sprite generator (provided you have 1.2 or later) to generate new sprite that match your new texture.