Well, since Blue+Green Swoop, and the Orange+Purple Sludge were conceived with Yellow Grimlock (And would theoretically have been released together) we only need outlandish schemes for Snarl and Slug.
And more 'traditional' G2 schemes for Swoop and Sludge. (unchanged robot chest colors, with a solid color for the Dino-parts.)
I'll think about them.
EDIT: Working list.
EDIT: reasearch.
EDIT: DONE! I thought way too hard about this!
'Traditional G2". Inspired by the Power Rangers teams-different, solid colors for each member- we already used Red, Blue and Green, leaving out of the standard CORE team colors: Yellow, Black, and Pink. A pink Dinobot would not have flown in the 90's so that's out. So I'm thinking:
Sludge in a non-glossy black on the dino-parts/robot limbs
Swoop who, aside from his chest, face and arms, would be a Deep Yellow (admittedly, that is not much more than his legs). While I'd like his wings in a gold chrome, the unchanged chrome on the rest of the TG2 nixes that.
"Duo-Schemes" (pending)
Okay, this was harder. There is no color unity among the 3 proposed dinobot, and their individual schemes don't follow and color patterns or theory, or even taste. I looked at logos for sport teams, and no one in their right mind would make a logo with ugly G2 Dinobot colors. Then I thought: who among that time were as reckless with tacky colors as Hasbro's Transformers team? Hasbro's G.I. Joe team! So I searched "yellow g.i. joe vehicle", and among the Tiger Force and Adventure Team vehicles was The Badger. Granted the picture was from a ebay auction and, while I quickly found out the toys is a neon green, the lighting made it look yellow. A pic from Transformersland made it look more yellow than green, but the weapons were blue! Not turquoise, but it's something to go on!
So with Sludge's scheme- orange with purple- lead me to the Parasite.
Swoop.....there are plenty silver G.I. Joe vehicles, plus he tends to break patterns anyway, so I had my inspiration: 90's G.I. joe vehicles! Naturally excluding any that are green and/or red to prevent redundancies from TG2 Snarl and Slug. Plus, to keep within the rules I hold only myself to: vehicles named after creatures.
SNARL: Light blue (dino) with a yellow chest, inspired by the Cobra Barracuda.
SLUG: White-white (dino) with navy blue chest, inspired by the Cobra Ice Snake