Dear Mr Scrump,

I would personally be inclined in this instance to leave it colourless. Painting it black could potentially result it the unfortunate consequences of sucking members of your audience and of surrounding cosmic artefacts into your instrument and of their potential reappearance in a parallel universe in any one of 16 possible dimensions. For some audiences this could, of course, be a positive side effect but I believe it is a practice generally best avoided in so far as it is possible.

This is in sharp contrast to Mr Rapaire's project where he hopes to exploit that very property to produce a very loud exergenic guitar. However, the design required there necessitates that I peruse my classical, quantum and unified theory intrument-making notes to provide a satisfactory proposal.

Always pleased to be of service, especially to a new patient!

Yours most sincerely,

Dr. Guitar