This skin is not supported by Roland. It is safe to use, as it only involves replacing the original .png files. I have created this skin for myself, but it’s more fun to share for free. Make sure to backup the original Script folder first!
Copy and replace the .png files in the Script folder (C:\Program Files\Roland VS\TB-303\Script)
Copy and replace the .png files in the Script folder (Macintosh HD/SSD>Library>Audio>Plug-Ins>Components>TB-303.component(Right Click!)>Contents>Resources>Script)