So there’s been a lot of talk and general desire for SKINs for structures lately, and CCP has mentioned many times that they want to figure out a good system to allow them to work, given that regular SKINs are applied to individual characters. In place of that, and as a first, easier way of doing things, how about this:
Allow corp Directors to set a “primary” and “secondary” color for their corporation, which can then be applied to any structure controlled by the corp.
All Upwell structure types share a common base texture map - citadels have one, ECs have one, etc., and changing the color pallette based on chosen colors would be exceedingly uncomplicated, from an art-asset perspective.
Having the primary color replace the base and the secondary replace the highlight, with the colors set corp-by-corp, would allow for a fun level of visual distinction between different corporations’ structures - and it would be completely unattached from characters, just as CCP wishes to eventually do with structure SKINs.
(Heck, if they wanted to, they could use the same palette-swap to allow for “corp colors” on any ship they wanted, as well - though this suggestion is primarily for structures.)