How to Increase Sublime Text Sidebar Font Size
      12.08.2014    
    You may have noticed that the default sidebar font size is too small in Sublime Text. Fortunately, there is a way to change that. Skip to step 5 if you already have Package Control and PackageResourceViewer installed.
- Install Package Control if you haven’t already
 - Hit 
cmd + shift + pto bring up the command palette - Type in “Package Control: Install Package” and hit enter
 - Type in “PackageResourceViewer” and hit enter
 - Bring up the command palette again
 - Type in “PackageResourceViewer: Open Resource” and hit enter
 - Select your theme (e.g. Theme – Soda)
 - Select your theme file (e.g. Soda Dark 3.sublime-theme)
 - Hit 
cmd + fand find “Sidebar entry” - Add 
"font.size": 16to the options* - Save and restart Sublime Text
 
*The options should look something like this:
    // Sidebar entry
    {
        "class": "sidebar_label",
        "color": [125, 125, 125],
        "shadow_color": [0, 0, 0],
        "shadow_offset": [0, -1],
        "font.bold": false,
        "font.italic": false,
        "font.size": 16
    },
If you did everything right, you should have larger and easier to see sidebar font.