In illinois is it illegal to have clear corner lenses (turn signals)?

I believe so. They have to be, yellow or orange. Or at least, that is what i am told.In illinois is it illegal to have clear corner lenses (turn signals)?
My belief is no, not if the bulb in it is either red or yellow.In illinois is it illegal to have clear corner lenses (turn signals)?
it is not illegal if you put a orange bulb in them
yep they have to be yellow or red