CodeCanyon - Lights Out / Objects Highlighter - RIP | 412 KB
Pure javascript plugin which can highlight any element on your page.
Features
Framework independent.
Cross browser compatibility.
Requires no javascript knowledge.
DEMO:
http://codecanyon.net/item/lights-out-objects-highlighter/5503076?WT.ac=search_thumb&WT.seg_1=search_thumb&WT.z_author=Sandi