Q: As an Xara owner how do I measure luminosity within Xara Xtreme?

We hired a very talented webdesigner, Ben Hunt of ScratchMedia, to redesign our website at http://www.sunhome.biz.

He did an excellent job at evaluating our site and our audience and created a great site for us. In an article he wrote about our website, http://www.webdesignfromscratch.com/...ns-sunhome.cfm, he mentions contrast and measures it with luminosity. I would like to measure contrasts within XARA Xtreme. Is this possible?