Metal Lion Australis Graphite is a new dark theme with large buttons and 'tabs on top', that uses the new coding template method I developed to greatly reduce the possibility of themes constantly needing to be fixed due to the many changes that now occur with Firefox since its 'Rapid Release' policy. Essentially, the theme 'flexes and adjusts' to the changes. This means that users can relax and just enjoy using the theme without such concerns, which is how it should be. :)
The original template theme - https://addons.mozilla.org/en-US/firefox/addon/metal-lion-australis-theme/
was designed for people who wanted a dark theme giving the exact default Australis UI look, but with large toolbar buttons.
This theme, Metal Lion Australis Graphite, is different. Dark with large dark toolbar buttons, but for people who asked me to dramatically improve the new default 'Australis' look and to restore a more familiar, and logical, UI layout and also to restore some removed features, where needed. So, that's what the theme does.
If you prefer a theme with lighter 'normal' sized toolbar buttons, advanced features and restored functionality, then you may well want to look at these -https://addons.mozilla.org/en-US/firefox/addon/metal-lion-australis-tiger-sp/https://addons.mozilla.org/en-US/firefox/addon/metal-lion-australis-tiger/
Incidentally, as in the past, when I do dark themes I always use light backgrounds on the menus, sidebars, popups and dropdowns, just so people can read them easily and quickly.
Below is a list of the main features or you can just skip that and Install it.
Hope you enjoy using Metal Lion Australis Graphite.
# Fully styled throughout, including Addons Manager, New Tab, Option window, etc.
# Toolbar heights slightly reduced and spaces between toolbar buttons reduced.
# Tab height reduced substantially and concave/convex curves of tabs redesigned.
# Maximum tab width increased to 250px as in earlier versions.
# New Tab (cross style) button added to Tab Bar, normal New Tab toolbar button can then be placed anywhere.
# Close Tab buttons on all tabs under all conditions. These are dark so as not to distract, but light up on hover.
# Forward/Back buttons moved away from addressbar and 'conditional Forward feature' has been overridden.
# Combined Reload/Stop buttons placed between Forward/Back and addressbar, as people requested.
# The distracting feature of the addressbar contents flexing about has been overridden.
# Notification popups in addressbar moved to far right end of it.
# Bookmark animation restyled.
# Searchbar History dropdown list and dropmarker has been restored.
# Large sized toolbar buttons, with a very dark grey gradient.
# Forward/Back normal/hover/active/disabled background effects improved...a lot.
# Styled scrollbars that can be universally used or disabled, if required.*
# Sidebars now open to a 800 pixel maximum width and have no minimum width.
# Findbar restyled and re-ordered.
* Theme contains my tiny 'companion' scrollbars extension when installed.
** Entire theme 'bundle' is less than 100kb in filesize.
Patrick J. Dempsey - for his excellent SVG filter research work and ever useful code advice and assistance.