websites.php

Select a website use photoshop's Channel Mixer (image->adjustments->channel mixer) to change the colours but maintain the relative harmony between them.
Select an image extract the colour codes from the image and build the colour scheme so the image blends in perfectly
Select a colour scheme and use photoshops Variations tool (image->adjustments->Variations) to change the image's tone to one that fits in with the colour scheme
Use the stamp tool (Filter->Sketch->Stamp) to change images into coloured objects which fit in with the colour scheme
Surround images that don't fit in with a border