Firefox 57 UI tweaks help needed

[LogicalDrm]

After updating to new Firefox, besides loosing some of my most helpful addons, UI is bit messed. I have been able to move tabs under bookmarks bar, which is preferred on main browser (idk why, I use top tabs on Opera) and make menu fonts bigger. But there are 3 things bothering me and simple googleing didn't bring solution. Added that I don't know nothing about CSS which probably could fix things.

 

Here's how things are. Now I would like to have bigger icons. For some reasons setting for it (Touch mode) does nothing when I don't have touch device. If you know better theme, please do share (one with bigger icons) or other way to make them bigger.

 

Second and third things are tabs bar. I'm using Light theme as it what I've used to. The blue of tab bar is annoying. I know it comes from Windows color theme, but I'd like it to be white-ish like other menu items backgrounds. Again, all tweaks to this are welcome. Another thing with tab bar is height of it. Or rather padding around text. It could be maybe 1/3 less. Its like that because of font being 1.25 instead of default. But surely there's some way to shrink it a bit.

 

Spoiler

I have this code in /chrome/userChrome.css for tabs being under bookmarks bar:

/* Tab bar below Navigation & Bookmarks Toolbars

  For best results, show Title Bar or Menu Bar */
  #nav-bar { /* main toolbar */
  -moz-box-ordinal-group: 1 !important;
  border-top-width: 0 !important; 
   }
    #PersonalToolbar { /* bookmarks toolbar */
   -moz-box-ordinal-group: 2 !important;
   }
   #TabsToolbar { /* tab bar */
 -moz-box-ordinal-group: 3 !important;
   }