context menu and tab division

hey there im using windows style builder and i stumbled upon this theme: Simple Getuk by s4r1n994n on deviantART that has a very minimal context menu that i want to "steal" to use with my theme (for personal use). i tried changing literally all the stuff on "lists, menus and tabs" - "menu" but the result differs from getuk



i also found this "glitch" that i get when i use the context menu on firefox. the simple getuk theme also has it so it's not a problem exclusive to my theme



the other issue i have is this blue line that's constantly bugging me. it works like a separator for these "tabs"... you can also see it when you organize files as "details" on file explorer but in the case below its on a software called soulseekqt



i run windows 8 but this forum seems to have a more specific subforum (themes and styles) than windows 8 forums and as far as i know themes work practically the same so that shouldn't be a problem....

hey there i'm running 1.6

oh yeah they may be different but what i meant was that the solution for this problem doesn't change no matter what os i'm running... or that's what i think