"Blacking out" char portaits, select screens

[Deceleration]

Hey everyone. I was wondering if anyone could walk me through the process on Fighter Factory ultimate of literally turning select portraits (big and small portraits) to be completely be blacked out. I tried to color the portraits in, but it did not work. I tried moving the portraits away from the 't' area that marks the portrait to see if it can be blank. Maybe I am saving it wrong. Help would  be GREATLY appreciated for the four chars out of 150 I want to be 'secret' characters. tHanks much!!!

[AngelEcks]

Have you tried Coloring over the Sprite using, the transparent color?

I've had no reason to try this out before,
 but in theory it should work.

[Deceleration]

I used that and it worked out pretty well, thank you!