Necessity being the mother of invention or maybe innovation, I used the Twinkling H2O of Starry Night to add the greys to our bird friend.
They are watercolors that have mica powder in them so you get the best of transparency and glitter without any of the mess. And the best part of the H2Os is that the effect is very subtle. In the picture it looks grainy and not smooth. But that is the glittery watercolors. It looks like much better in person.
I added the grey to everything but the pantaloons.
Crows, grackles or whatever name you give them are irridescent in the sunlight, glittering with a radiance that seems too good for the cheeky little sca vengers. And I was terrified that adding darker colors over the jewel tones was going to destroy what I started. But it has turned out so well!
Then the next step will be to finish dressing the bird. (pun intended) I had thought that I would do some sort of a belt. But I'd rather skip it and make a collar with a gem in it. I'd been thinking gold. Silver would be the best choice though. To keep things a bit dark and mysterious, I think.