I get the feeling you were inspired by a certain semi-aquatic mammal for the Triceratops' color scheme. The Styracosaurus gets my vote, though. You did an excellent job on all three of them!
Heh, I suppose you're close, but it was actually elephants behind the Trike's colors-- some have that dappling texture and pinkish tone. The Chasmo was similarly inspired by baby crocodiles, but Stryac had no real inspiration behind it. Anyway, glad you like it! ^^