Lilly you could try an IPL but it might take a lot more applications if your hair is light. I don't think the color above the skin really matters. You are supposed to shave so only the hair below the skin gets treated anyway.
I also bought a Remington IlightPro. I believe it is starting to work on some of the hair. Mine were very think and dark except for the ever appearing grey ones. Lol So on power level five it bites when there are live hairs under the light window. Face hurts really bad. I have to take a break after 3 or 4 hits from it. But I have noticed more of the dark hairs are not held on to the root anymore. Some just pull out easy if I try a bit with tweezers so I'm hopeful it's going to work over time. It was less than $200US so not terrible on the budget compared to electrolysis sessions.