Sir, the tech boys have come up with a quick and dirty concept of plating the standard X-COM ARMOR blah blah blah.
Includes a ruleset: Colored_Power_Armor.rul that adds crudely:
Sunfire Suit (orangey tone)
XCOM scientists have found a way to plate the POWER SUIT with a coating that is highly resistant to plasma weaponry (200% protection). This comes at a cost as it is more brittle against conventional weapons (50% protection).
Psonic Armor (Purple)
XCOM scientists have found a way to plate the POWER SUIT with a coating that increases the wearers' resistance against psonically based attacks. This comes at a cost, as it is 50% more susceptible to damage of all types.
The stats for the Psonic armor don't really work as it's kind of a place holder at the moment.