Fixing Color and Some Shadow from Proton

[benyaminl]

[WIP]

This is update for big button like bookmark, back, forward, and refresh/reload

Anyway I want to express my gratitude for this userChrome.css, this really help make Firefox felt at home with windows 10. thank you!

[benyaminl]

This should fix #8

tested on Toolbar and tested on Checking Spell check

[benyaminl]

Fix the #8 as whole

[benyaminl]

Another Fix