Hello Last year, I first saw the icons in the far right top corner of home page (red 'X' and other orange one) kept turning grey. Now for several months the entire top 'task bar' area of Firefox home page constantly turns grey, then back to regular color, back and forth, in the most aggravating way. I tried all suggestions: disabled hardware accelerations, disabled themes and extensions, cleared cache.... Still persists. Has anybody else encountered this? I use Firefox as my only browser-- on a Toshiba laptop. Thanks.