Community-made theme, originally shipped with Blender up to version 4.1
Initial release based on the version bundled with Blender 4.1
Hey there! What OS are you using... and are you trying from Blender or just the OS's built-in archive tool?? To install a theme manually, you need to extract the XML file from the ZIP and then install that. Blender currently doesn't automatically unpack the ZIP for themes like it does for add-ons.
The ZIP is not good ! I cannot extract it !