I recently switched to linux mint, and was using firefox since years on my windows and i actually loved it but in the linux mint version of the software i am facing constant problems like network issues and a '''major problem''' is that the icons and thumbnails for websites and many internal websites icons and objects have drastically modified colour to purple green, I am attaching an image below for your clarity of the problem. for your information the youtube videos are fine and don't seem to have any problem.