I thought that the minimalist uniforms of Starfleet would make a good subject for this challenge.
The simple circular forms and horizontal banding represent the uniforms of the different personnel on board:
Command&Helm, Engineering/Security/Ops, Science&Medical,
in each of the 5 different Star Trek TV series.
You could wear this out and about, or have it as a print on your wall, and only fellow Trek fans would know your secret, to everyone else it's just a pretty pattern!
Printed in 5 ink colors (Red, Yellow, Blue, Purple and Black)