Anyone else experience colour problems?
Yes. When I had optic neuritis it was like trying to look through my glasses when they're fogged over. Even after it cleared up following treatment with IV prednisone, I repeatedly noticed that some colors had diminished intensity when viewed through the affected eye. The colors just seemed a little less bright and grayer. You may want to consult with your doctor regarding your new symptoms. Treatment with steroids could be indicated as it might help to lessen the probability of sustaining permanent damage to the optic nerve from the inflammation. Even after I "recovered" from my optic neuritis, my vision was sensitive to heat. For example, taking a shower that was too hot or spending too much time out on a hot day (e.g., > 90°F) would elicit the fogged over effect obscuring my vision. Cooling off always helped it to recover. Over a period of several years my eye has become less susceptible to heat induced problems. This could be a sign that my treatment with Avonex combined with my supplement regimen is having a positive effect allowing the optic nerve to heal. Of course, due to the relapse/remitting nature of MS, it could just be part of the natural cycle of the disease (it's hard to tell with just a sample size of n=1).