Drag the Firefox launcher from the Menu -> Internet to the desktop The icon presented will be the traditional Firefox icon. Clicking on the icon to launch Firefox will change the icon to the new Firefox 22 icon look and will stay that way until closed at which time it will revert back to the traditional icon look. Reproducible: Steps to Reproduce:
I think KDE is changing colors of all desktop icons when launched so I mistaken it for the newer different icon. This bug is (self)resolved.
Status: NEW => RESOLVEDResolution: (none) => FIXED