Some Low-Level Page Design Support.

Colour

Some notes on colour representations. From Berkeley University's physics department.

Comprehensive guide to colour models, from Adobe.

Notes on colour models, from Brown University.

More on colour, if you still need it.

Page Design

Page design - some useful guidelines.

Dmitry's Design Lab. Patrick Lynch's site. Revisit, these sites (I suggested them in week 1) and trawl them for low-level design advice.