Hi Rhiannon,
What you are having is visual sz. where certain colors are triggering your seizures this is known as being photosensitive. The best thing to do is have your neuro order a special e.e.g. with flashing lights. They will flash different color strobe lights one at a time and by doing this they will be able to find out if certain colors are triggering sz. I found out that florescent green, amber and bright white like the sun shining on the snow can cause sz. for me. Also you are probably having sz. while on the computer because there are strobe lights on the computer monitor but they are flashing so fast that you don't realize it. Try to adjust the brightness of your screen so it isn't so bright and see if that makes a difference for you. Wishing you the best and May God Bless You!

Sue