Improve search bar inputs' style

[jasongitmail]

Great work on the theme!

Noticed one opportunity for improvement.

The find and replace inputs have an unusual background color, with a lighter gray rectangle inside them that seems unintentional:

For comparison, here is One Dark Pro theme:

[PyaeSoneAungRgn]

Thanks you, i'll try to fix and release new version

[jasongitmail]

It turns out the slightly lighter color in the Github Dark theme's searhc input, is actually "editor.background"'s color showing through. The solution is to make "toolbar.background" the same color as "editor.background".

I'll submit a PR.