This is a simple one. In the latest Cinema 4D R25, Maxon have switched the green “Active” button to a grey one. For some people, including me, this has made it a bit harder to glance at the object manager and immediately check for active deformers and objects. Here’s how to change it back (and as a bonus, here’s how to change any and every C4D icon!)
Inside this folder, you will find a file called
Open it with any image editor. You will find the grey tick here:
On you image editor, you can colorize it, draw over or put a different icon over it. Save the file to your desktop, and then use it to replace the original.