#64 Alternative color for Mercenaries

[Danau]

The colors used for Fremen and for Mercenaries look very similar (at least for people with deuteranomaly colorblindness, I'm not sure if they look the same for people that are not colorblind).

I would like to see an option added to the game where the Mercenaries can get a completely different (eg Light Grey) color. Setting house colors through ObjectData.ini might also be nice.