Is there Power Steering fluid color Black?

Maybe some kind of stop leak product?

I've never heard of black power steering fluid.

I've seen burnt transmission fluid that looked black.

Gm auto track transfercase fluid is blue.

BMW has a blue antifreeze/coolant.

Only power steering fluid I've ever seen is ATF red or clear/yellowish -brown when it's getting old.

Sounds like you have a leak somewhere more than likely in the pressure line and of course the cap. Fix the leak and of course flush the Power steering with new clean fluid should be back to normal.

Is the current Chrysler synthetic atf blue? Or am I thinking of some other fluid? Maybe the GM transfer case stuff?

Mine is kind of a dark brown, the new stuff I just put in it. Or maybe I looked at it in the wrong light, it could be yellow. But no not black :) kinda weird that they would mix it up, though. You never know, there are always different variations of stuff coming out. Like that orange windshield wiper fluid (which sucks, btw.)

Sounds like that other shop put in the wrong product and its reacting to his rubber components, perhaps the hoses and rubber seals are disintergrating. Who knows, probably best to write it up on your work order incase in comes back. good luck

Nope!