| BlackAqua | | - | |
| BlackAK47 | | - | |
| Black Edge Theme for Firefox | | - | |
| Bauhaus_Pure | | - | |
| BLUESLATE for Firefox | | - | |
| BBB Bear Blue Baby | | - | |
| Azerty III | | - | |
| AvantGarde | | - | |
| Australis upd | | - | |
| Australis Redesigned | | - | |
| Australis ReDesigned | | - | |
| Australis Designed | | - | |
| Australis | | - | |
| Atletico Nacional - Nacho Verde | | - | |
| Arctic Glow | | - | |
| Arc Theme | | - | |
| Arc Papirus Dark Papirus Dark Theme | | - | |
| Arc Darker Theme | | - | |
| Arc Dark Theme | | - | |
| Aluminum Kai | | - | |
| Alabama Crimson Tide | | - | |
| Afterglow | | - | |
| Aero Improved | | - | |
| Aeon Small | | - | |
| Aeon Jumbo | | - | |
| Aeon Colors | | - | |
| Aeon Clouds | | - | |
| Aeon Big | | - | |
| Aeon | | - | |
| Adwaita | | - | |
| Acid Burn | | - | |
| Abstract PC | | - | |
| ASU | | - | |
| A Blue Fox Theme | | - | |
| A Bloody Red Theme | | - | |
| 8 Ultimo | | - | |
| 708090－lite | | - | |
| 708090 | | - | |
| 4Scape | | - | |
| 1st-innerport suzuri | | - | |
| 1.FC Koeln | | - | |