Nice graphic simplicity and sharp focus on the filament. Diagonal orientation seems appropriate. I like the yellow-orange and blue, which have associations with light bulbs I have seen. The green is an acceptable artistic choice, but I would have liked less of the green arc, mostly because of my own bias and experience. Nevertheless, one of the higher scores from me.
Ahh! finally. :) So far most of the images that have nothing but a simple light-bulb for a subject, like this, have been pretty boring. This however, is well-done; the vibrant color adds a great deal of interest. Excellent work.