Injector color info

Sorry to be late chiming in on this. I wouldn't have commented a little late had I not done some research on these particular injectors earlier this year.

Yes, they are 24lb injectors and are from a Volvo as Mike (Mustang5L5) stated. Specifically they are from a 99-01 Volvo S80 w/ 2.9L 6 cyl.
The upside to these injectors (IMHO) is they are an EV6 body, Jetronic connector (no connector adapter needed), body dimensions allow their direct swap into a 5.0 and are compatible with the original 19lb electrical resistance specs. The EV6 body runs cooler ( plastic vs metal) and has a better atomization pattern (four nozzles vs one nozzle).

Personally, I say run'em if it's a mild mod motor. Theoretically they'll operate at approximately 85% duty cycle rate for a low 300hp range output motor. I got lucky with a set of Beck/Arnley rebuilds from Rock Auto this past year. They were a close out and I got them for a whopping $60...for the set!!

Just don't mind their color!