Theme contrast is way too low (especially layout separation lines) making the site unnecessarily messy to look at

The current gitlab theme's contrast is way too low: while the font and icons are ok, the separating lines of the layout are almost invisible on one of my admittedly older screens, and even on the good and fancy ones I own it's not that nice to look at because everything seems to just randomly float in the space because the layout lines are barely visible. This makes e.g. the numbers behind the "Star" button or the "Fork" button seem not obviously associated at a first glance, and generally just buttons seem to float a bit randomly everywhere because there is no easily visible layout separation (there is if you look closer, but it's just not standing out enough at least for the main areas).

This is made worse by the many separate layout rows of navigation, buttons, extra lower buttons, extra extra buttons, .. on the project main pages when logged in, which is where you don't want new users to be confused so they consider participating.

In comparison, github has better visible separation lines, therefore giving a much clearer layout. Even though github hits users in the head with the long file list when opening a repo while hiding the useful README at the very bottom, it still feels much more orderly and easier to navigate because the layout is super clear, even though the choice of information shown is inferior to gitlab's current nice project main pages. (IMHO)

I know low contrast stuff is "in" right now, but could it maybe be dialed back a little? Usability shouldn't suffer from this recent trend.