I just adopted the pet Aseri, and I am thinking of using a pre-existing character look that I have. This is the look of the character
She is a harpy but everything else needs to be fleshed out.
What pet color/species do you think would work well with that? I will probably end up with an overlay too - but I always like it to be close otherwise.
Or should I just make a new character....
First thing I thought when I saw her was fester. I don't normally like fester because they always look so mean, but some of the colors are nice. For example, dark matter goes well with her purple wings:

Storm looks like almost the same pose as she has in that picture:

My personal favorite fester is angelic, and I think if you wanted that you could do an overlay to recolor it:

Another good option might be irion, but not knowing Aseri's character it would be tough to say. Irions always seemed a little derpy to me, but there are several options to choose from. :)