sorry but it's not possible to install or convert cooliris to kmeleon because it relies heavily on ff overlay and bad xul interface code. xul makes it easy for extensions in firefox to manipulate the interface unlike any other browser but xul ui makes firefox slow and bad with memory.
not like the way cooliris functions..if i remeber correctly, it splits the firefox ui and creates a panel at the bottom where images are displayed in a slide.. it's pure xul gimmick. the closest thing to cooliris is the slideshow macro by bravenbor