256 colors panels

I'm using about 60 different PCX panels in a game. I'd like to use 256 colors panels do decrease the final size of the game files. But, when I open one of these panels, it shows miscolored graphics.

Everything is fine when I use 16 bit panels. Is there a way to use 256 color graphics panels in a 16 (ou 32) bit game?

Thnaks in advance.

Unless you have equal to or less than 256 colors, you'll see distortions. Other than that, change the palette used.

In photoshop, before you even make the panel, set it to 256 colors. I think it can be done.

Thank you both for the answers.

@anonymous_alcohol: I think I can't do that. I've already create the panels. There are 67 of them...

@ulillillia: How can I change the palette? Is there a tutorial or something to guide me in this?

How to change your palette:
Just open your level.
Then under map_properties you´ll find the palette as a .pcx file....just replace it by a new one