I've tried PyCharm on Windows, Linux and Mac. It looks the best on Windows, the context menu's within the editor and in the menus look good. On Mac, the context menu's within the editor do not follow the Mac theme, they don't match the Mac menu look and feel. On Linux, GTK+ is used and most of it looks fine except any of the menus. All of the menu items look extremely contrasted when the items are disabled. I use a dark theme on Linux and it is just out of place and very hard on the eyes. I don't have pictures of the Mac look, but attached is how it looks on Linux. Is this something you are aware of and will address in the future?