What happens is you cant read black on white but you find it easyer to read say black on yellow, cant tell you how it works but it does It somehow makes every thing clear. EDIT: I might as well add that with my dyslexia I sometimes say number plates wrong but when someone says thats wrong I am like ye I said this and they then say yes thats right. Also I am quite poor at spelling but I can do complex numbers easly with out realy putting to much thought into it.