Decal textures with lighting?

This is for my LEGO game, [url="http://www.blockland.us"]Blockland[/url].

What I'm trying to do is have a decal painted on the lego guy's chest and be able to change the color of his chest independantly of the decal texture.

The way I'm doing it right now is :

glEnable(GL_COLOR_MATERIAL);
glColor4f(<the color I want his chest to be>);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);

Then the texture decal texture has an alpha channel that allows the color to show through.
It works, but the problem is that the decal texture glows in the dark

I understand that this is the just way GL_DECAL works, so my question is: Is there another way to achieve this effect that will avoid the "glow in the dark" problem.