No it always glows orange, I have never seen in my life a white igniter.
5 minutes is way too long, sounds like a low amperage issue. Your igniter is part number 5303935066
but the much cheaper GE WB2x9998
is an exact replacement for this igniter. I would swap that first and that should fix the long light problem.
hmm, but with the burner problem you could have a regulator issue. I assume your oven was properly set up for propane and not natural gas. How long are they clicking?