change colors of modded engraving

[slipstreamm 0]

I extracted the _eg texture map on micah's revolver using OpenIV, renamed it to doubleaction_01 so I could put it on the regular double action, and put it inside a .ytd file with the texture tool. I also did the same thing with the +hi.ytd version. I then put the files in lml/stream. It works in game, but the engraving is the same color as the barrel, so it's kind of hard to see. Is there some way I can change the engraving to a different color like black or white? This is probably a dumb question but I have pretty much no idea how the texture files on this game work and can't find any information on them.