@whatever

Great advice but this is going to be a totally new build, so I haven't got the parts in.

Motherboard I'm thinking of using is GA-X48-DS4

Graphics card HD 4870

Ram OCZ Reaper

all subject to change, and would always take recommendations. Could I change the colour of these items?

@Big_Daddy

Thanks for the information however as you can tell by my spelling of colour, I live in the UK where items are limited. I'm planning on using 7/16ID 5/8OD tubing.
I havent seen coloured tubing of this size.