I wish I could do this to every bass I sell. Alas, it is up to you!
This bass graces the classroom of music teacher Heather Stoker of Tacoma, WA. The design was achieved with an initial "wash" undercoat to provide a colorful background, followed by the actual drawing and hashmarks, followed by a protective clear lacquer coat.
Sooo... any marimba with tubes is a blank canvas waiting to be filled. Recruit some creative students, a local artist, or ....