Is there a prescribed meaning to the multi-colored suits? I know the color of the one-color suits in T:L meant something, but does it or the color of a character's vehicle say anything about their alignment/sympathies in T:U? The girl programs obviously seem to have a tendency towards pink light cycles.

I am not certain whether secondary circuit color is preference, or some type of innate result of the individual Program's nature.

Thus far, the 'primary' colors are known, but I think the secondary,lesser program colors might reflect something of a deeper ideology or drive. The subtle blends in hue make for a compelling thought - even 'clashing' colors, such as into the purple, magenta, green, or pink - could easily hint at the tug of leanings of forces on a Program's beliefs,psychology, or personality.

How Programs 'read' or react to others' coloration is another matter.

There is also that in the original Tron, pink (or temporarily pink/'blushing') circuitry was a sign of some type of physical rapport or reaction; whether more like human physical blush, or whether just a sign of love, care, affection, or a deeper receptiveness to another Program's presence, is unknown.

I'd certainly like to see what Tron: Uprising might have to say on the matter. (Keep fighting harder; we want answers! And ideally, more excellent questions and wonders!)