I think this is the best place to post this, I wasn't sure, i kind of falls into the category of software
Its a custom guitar designer that covers every visible part of a guitar. eg. timber, paint, pickups and hardware
Just make sure that you scroll to the bottom of the page to the "Kisekae VIM System" section.
http://www.yajimastringworks.com/tct...-kisekae-e.asp
I have been using this for years to plan out any custom work or mods I was doing. It's a really good way to plan out colour schemes and I think it may work really well for planning your next Wudtone based paint job especially because you can control the level of paint opacity.
I will say though, the format of the program has changed sine I last used it