I've bought the pretty miniature figurines' martians and I'm planning to include them as the arch-enemies of my venusian amazons.
I've only one doubt, how to paint them.

Here some painted martians and a swamp lord (the little martian) I've found in the minifigs website.
I like the paint scheme, but I'm considering if paint the skin with green color and maybe the armor in dirty metal, while the helmet with red color.
I've found another painted martian that could inspire me:

While I'm evaluating the paint scheme, here the PA league I've done.
Background:
Thousands of years ago, few martians survivors fled from their dying world after the last days of the Techno-Biological wars between Mars and Venus.
They found refuge in the planet earth, as their venusian enemies did too. There they continued to fight their unending battle againts the venusians. Finally, the leaders of the opposing alien factions agreed to sign a truce and hid their people in the depths of the African jungle. Here for centuries the Martians and Venusians lived in relative peace, with only occasional skirmishes. However, the increasing human presence in the vicinity of their territories is annoying the martians and they are preparing themselves for war. They know well that, although still holders of the technological supremacy, they are greatly outnumbered by humans so they are planning to steal the lost cloning technology jealously preserved from their neighbors venusian. Martian City State of Lacedaemon 14 slots
Perks (2): Companions (1), Altar (1)
Leader (0): God-King AreusH d10 B 4d10 S 3d10 D 2d10 M 3d8 F 2d8 C 3d10
Abilities: Commander, Fierce, Brute
Ally (2): Martian HippeusH d6 B 3d6 S 2d6 D 1d6 M 1d6 F 1d6 C 2d6
Ability: Fierce, Brute
Ally (2): Martian HippeusH d6 B 3d6 S 2d6 D 1d6 M 1d6 F 1d6 C 2d6
Ability: Fierce, Brute
Ally (2): Martian HippeusH d6 B 3d6 S 2d6 D 1d6 M 1d6 F 1d6 C 2d6
Ability: Fierce, Brute
Ally (2): Martian SpartiatiH d6 B 2d6 S 3d6 D 1d6 M 1d6 F 1d6 C 2d6
Ability: Marksman, Sharp
Ally (2): Martian SpartiatiH d6 B 2d6 S 3d6 D 1d6 M 1d6 F 1d6 C 2d6
Ability: Marksman, Sharp
Ally (2): Martian SpartiatiH d6 B 2d6 S 3d6 D 1d6 M 1d6 F 1d6 C 2d6
Ability: Marksman, Sharp
Models: 7 figures