Developing E-learning material for people with disabilities

Hello all,

I have recently been developing e-learning material through Artcilaute and the point was raised about providing accessabiliy to people with disabilties such as dyslexia.

I was wondering if anyone had any guidelines or standrads that they use. I have read about some online, but they begin to really stifle creativity (such as not using white, green or red backgrounds).

What are people's thoughts?