Branch: Master

This is the development version used for testing and is not recommended for standard usage.

Design Notes

Base Color: #31363b
Accent Color: #0088ee (Azure)
Pinned Tab Bar: #2693ff / #0080ff
Hovered Tab Background: #067cf1 / #246ca2

Requirements:

Firefox 57+, Tab Center Redux(Add-on) [Optional] 

Instructions

Install the Tab Center Redux Add-on for Firefox 57+.

Once installation is successfully completed, type about:addons into the address bar.
Press Enter to open the Add-ons Manager. ─ Locate Tab Center Redux in the list of Add-ons, and select Options.

Tab Center Redux Settings:

1. Enable the Dark Theme
2. Set Compact to 'Always'
3. Enable Compact Pinned Tabs

https://gist.github.com/JZersche/192a7eceac601921a8730dde967cf422