I turned an old wallpaper from a beloved LEGO franchise into a Vivaldi theme! Let me know if you like it.
This is my first (and probably only) theme upload. The image is owned by the LEGO Group, but AFAIK they're okay with this wallpaper being distributed, since I had gotten it previously from the BioMedia Project, a Bionicle archival site. Also, it's 20+ years old now.