geralmente não gosto de coloração branca, mas esse tema consegue ser confortável aos olhos.

Made me feel comfortable, thank you!

not so light not so dark nice! (a little different though)

This does not use actual colors from Solarized theme!

Hi Ivan, I am solarized only guy here. I have been using https://addons.mozilla.org/en-US/firefox/addon/solarized-light/ till now it just injects solarized colour to header(where tabs lie) of the browser. I found your extension makes colour changes to settings menu also. I liked that but I feel contrast is just not right the way solarized light should have. I guess your are using base2 in the tabs while it should be using base3 and base2 probably when hovering over it.
I guess you aren't making use of standard(or official) colour pallete. https://ethanschoonover.com/solarized/