It was so great and nice, I spent about an hour designing it, untill it crashed and doesn't work anymore at all.... Desk image disappeared, leaving a black browser screen, and settings, theme editor is not opening anymore.... Yay, it was finished in an hour.... I was trying to find & delete it's settings in profile folder, but it's all the same black hole, nothing changed.... only Top bar in nice color, but black hole below... P.S. Ohh... I see now, after I deleted settings in profile folder & Restarted browser, Yay was gone, I could start to install Yay from very beginning...