Selection and document highlight nearly invisible

[leo-carmo]

Hi, congratulations for your nice theme!
A small remark I should point out is the fact that the selection color is almost the same as the background color, hence making it difficult for the weary eyes to tell what's selected. The same applies to the right-side miniview highlight.
Please consider fixing it! :)

[AdsonCicilioti]

Thanks @leo-carmo !
Fix in-progress now!