The most useful civ-colours are blue, cyan and red - others tend to be used a lot in other parts of the unit. Like in this unit:
- yellow is out of the question, because of lot of the golden colours used.
- blue is out of the question, because the plasma coil colour gets mixed up with the civ-colour
- green is out of the question, because that's one of the transparency colours
- red is out of the question, because it does not work well with blue. Really.
- cyan is in the borderline of usable, because it's closely related to blue.
- I really wouldn't go on using any mixed colours, because they are very hard to keep in check.
And palette-magic is a bit difficult to do, since I render these units as whole - I cannot determine the exact palette colours on units, since pigment textures of the unit may have strange effects. So I cannot pre-determine certain areas to use colours only from certain palettes.
So screw you very much

- it seems like this plasma is going to be glowing yellow
