Setting Up Photoshop For Web, App and iPhone Development
http://www.smashingmagazine.com/2009/10/12/setting-up-photoshop-for-web-app-and-iphone-development/

Edwards, Marc
Smashing
2009

Abstract:

Most people who have designed websites or apps in Photoshop will, at one point or another, have had issues trying to match colors in images to colors generated by HTML, CSS or code. This article aims to solve those problems once and for all.