Hawkeye does do color. $$$ though
I've heard good results, though. He's involved with the 15GP22 rebuild effort, too. Last I talked to him, the big thing about doing early color stuff had to do less with the physical tubes and more with the glass on them and a few other things. I forget exactly what, it was long ago I asked him.
They tend to specialize in antique/obsolete types, I think. So he might do color for a long time still.
Sigh. I hate planned obscelecence