Colored spots in vision daily lasting only seconds at a time? Also have increased anxiety. Had all clear by ophthalmologist, neurologist, pcp.

Keep track of events. You've had 3 doctors including specialists look at this problem. You've had sophisticated tests (even invasive) done. I would ask whether or not the neurologist is a headache specialist. If they are then, perhaps your symptoms are less likely neurological. If not then, if your events continue or progress it may be reasonable to ask your PCP for a referral to a headache specialist.
Colored spots daily . Ask your Neurologist, if it could be a variant of migraine. Anxiety Disorder is certainly one of the possibilities.