I made this theme for my new desktop last fall and recently edited it to make it Catppuccin-y. The images were made using Inkscape, then exported in png and layered together to make the themes. The boot animation is a 39-frame tail swish that I also did in Inkscape, and it took so long to edit and export each frame.
Can you provide a link to the files? I would love to use that on my laptop.
I replied with a link to the other comment here.