Starting from the top, going clockwise...
*Prices - all are based off of buying the original color petpet then painting them, but an already painted pet may be cheaper (I haven't checked)
Maraquan Anubis - Matches with an overall scaly, dragon feel. Anubis - 9k, PB - 100k
Green Niptor - Has a dino-dragon look, but the shade of green may be to dark to go well with a green sketih. Niptor - 110k, PB - 30k
Green Scarabug - Again, shade might be too dark - but if you like Scarabugs, go for it. Scarabug - 2k, PB - 30k
Gulper - They have awesome matching jaws
and both have a dragon-scale-thing. Gulper - 90k
Green Cyodrake - Probably the most expensive on the list...But the match is very nice, they both are dragons with tiny, tiny wings. Even the tail matches. Cyodrake - 600k, PB - 30k
Green Baby Fireball - Eh, seemed a little bright but you know how dragons breathe fire? Heh. It's a stretch i know
Baby Fireball - 12k, PB - 30k.
Tenna - Cheap as dirt, but they have matching green and yellow. Tenna - 1500 NP
Spyven - Relatively new, and with new items comes very thick lines. They both have the wings, and the green and yellow. Spyven - 100k
Wadjet - For something that is very cheap...it looks pretty cool. Again, it's got colors matching. I really like this match. Wadjet - 2000 NP
Green Erisim - With the yellow eyes and the matching green skin, I think this is a good match. Erisim - 150k, PB - 30k
Green Grackle Bug - Just another green petpet...but I think Grackle Bugs are awesome for some reason. Heh. Maraquan Grackle Bug (cheaper than uncoloured) - 20k, PB - 30k