Another Firefox Dark Theme

NOTE: The Chrome Refresh 2023 update has caused graphic alignment issues in with the active tab and toolbar elements. The blue accent highlighting used in the active tab may be displayed in the browser side panel with a tile pattern. This behavior cannot be addressed until documentation for Chrome themes is updated. v1.3.1 Fixed again. v1.3 Adjusted blue accent. v1.2.1 Update theme title and description. v1.2 Fix for active tab blue accent. v1.1 Added blue accent to tabs. v1.0 Initial release.