Reconditioning Concrete Shower Base

I have (what I believe) is a concrete showerbase in my bathroom. It is still serviceable but, along with the rest of the room (well the rest of the house actually) needs a spruce up. I would like to reproof it (it doesnt leak as far as I can tell) and recolour it (gloss white or similar).

I have bathroomwerx coming over to inspect and possibly quote on the job, but I was wondering if I could just DIY it with one of the epoxy based preparations from Crommelin's or Bostik?

Any advice and hints would be gratefully received.

Exkiwi,

My parents have just had their shower base done by bathroomwerx, and were very impressed with the results. They have a terazzo shower which was leaking bad at the joins.