Standardize buttons icons colors styles in address bar. "☆" and "•••" buttons are too eye catchy now, as they are too black. So either make them less black or make other icons also that black, so all buttons icons will have consistent color style

Actually, the structure team should probably own this ourselves given we're the ones adding most of these items, unless the visual team particularly wants to do this work. Dão, can you clarify how you're doing the colours in the navbar? It seems the design says to use #0c0c0d (#f9f9fa on inverted themes) on all of these items, but with 80% opacity in the navbar and 60% in the location bar. But the code I'm finding uses opaque colours that don't seem to match this ( https://dxr.mozilla.org/mozilla-central/source/browser/themes/shared/toolbarbutton-icons.inc.css#2-4 ). Is the design out of date, does it not match the live mocks, or am I just misunderstanding how it works (is there opacity applied somewhere else that I'm not seeing?) - and most importantly, how do we integrate the page action icons into however this system works?

The inversion logic is based on the toolbar's text color, which can be different from the location bar's text color. This means that you should not use --toolbarbutton-icon-fill here and you shouldn't hardcode #0c0c0d either. Since the difference between #0c0c0d (gray with blue shift) and #0c0c0c (real gray) is negligible, you should use currentColor with reduced opacity or fill-opacity.

I'm marking this bug as VERIFIED, as patch from bug #1377165 fixed also this issue, starting from Mozilla Firefox Nightly 56.0a1 (2017-07-04). Thanks.