i would say not.

if you are wanting basic principles of choosing colours for your site - and you want to look proffessional then i can offer my 10c worth.

1) Background colour

Choose a background colour - either white or black to start with

2) build the site with greys

Build the structure of your site using css and then introduce greys (only 2 or 3 shades).

3) add some colour

If you chose black as your background colour then take the lightest grey and substitute with a colour.

if you chose white then do the same with the lightest colour.

4) add images

when you have got to this stage then print screen it into photoshop and overlay coloured areas (like navigation areas) to the colour scheme that you have created so far.

BTW... personally i think that if you use more than 3 fonts on a site it looks disjointed. I tend to stick to a minimum of two.

hope this helps?