Its not particularly NESS btw – IE by default does not print in colour. (Something about the price of ink in the olden days)!

In IE 8+ (I beleive):

Bring down the File menu on the upper left of the IE window.

Select Page setup.

Look for the option (a check-box) Titled ‘Print Background Colors(USA) and Images.

If its not checked then check it – if it already is checked you are in trouble (like you are not using a colour printer or something beyond this FAQ can sort!)