A nice, simple, dark/black Firefox new tab page (for Firefox 31 onwards).
Another Assassin's Creed Unity for google theme This is my First theme i hope u liked it
Firefox about page in darkness Style available on this abouts... about: about:about about:accounts about:addons about:blocked about:blank about:buildconfig about:cache about:config about:crashes about:credits about:downloads about:neterror about:healthreport about:home about:license about:memory about:mozilla about:networking about:newtab about:permissions about:plugins about:preferences about:privatebrowsing about:rights about:robots about:sessionrestore about:support about:sync-log about:sync-progress about:sync-tabs about:telemetry about:webrtc about:welcomeback Not finished on about:serviceworkers about:cache about:cache?device=disk about:cache?device=memory about:cache?device=offline No style for about:app-manager, moving to WebIDE by Mozilla about:customizing
hide newtab-search-container/newtab-intro-what/newtab-customize-button, and ... 隐藏无关元素/美化拨号界面/美化搜索框/缩略图/自动更换壁纸 可能是最完美的新标签页样式了? about:newtab for 33+: https://userstyles.org/styles/112775/about-newtab-for-33 Update 2015-12-23
Display a visual badge and remove the underline below tabs for Private Tab add-on for Firefox. Also optionally hide the private browsing indicator usually displayed in the title bar.
A Numix Dark theme for Firefox Australis. This theme is designed to be used with the Classic Theme Restorer addon.
Reduces the navigation bar height and restyles the forward- and back button.
A Firefox theme to go w/ Neiio's gorgeous and colorful Visual Style. Get the matching startpage from here!
A bit like Gmail/Outlook look&feel, based on chrissi4u's 'CLEAN ADAPTION no1' designed for vertical message view. Note that you will have to adjust the width of the panes for the message list to display correctly AND you should arrange the columns in the following order: STARRED, ATTACHMENTS, SUBJECT, SENDER, DATE, SIZE. Or you can experiment with those. Not guaranteed to work with every window manager.
choose a background or add your own.