I really liked where he color coded the equation and the sentence describing how it worked. I've seen tables in the past explaining what each variable represented, but this was much clearer.

http://altdevblogaday.com/wp-content/uploads/2011/05/Derived...

I nearly got the light blue and green confused, and I have normal color vision. I think there are reasons to prefer tables, or perhaps something animated or interactive would work as well. (e.g. mouseover a term to get its description.)

>I nearly got the light blue and green confused, and I have normal color vision. //

Define normal.

I have some difficulty differentiating blues and greens sometimes but I found those shades to be quite distinct even on a low quality screen.

Perhaps your colour differentiation is worse than you think? It could be down to monitor settings though, for example.

There's an Ishihara test here - http://colorvisiontesting.com/ishihara.htm FWIW but I'd imagine you'd need to see an optician to do it correctly.