Re: Facebook design changer *REAL* application!
... or you could just use a browser add-in/bookmarklet offered for free, vetted, signed and hosted by your browser's maker/publisher. There are a few for Chrome, and likely for Firefox and IE8+ as well.
“Beware of bugs in the above code; I have only proved it correct, not tried it.” --Donald Knuth
"It was as if its architects were given a perfectly good hammer and gleefully replied, 'neat! With this hammer, we can build a tool that can pound in nails.'" -- Alex Papadimoulis (on TheDailyWTF.com)