For a colleague's reference to The Hitchhiker's Guide To The Galaxy, I made this simple sign.

The model is designed to be printed in multiple colors on a single color printer. Just insert color change twice in your slicer to have the back plate in dark color, the letter frames in another, and the large letters in a third color.

Model is publicly available in OnShape: https://cad.onshape.com/documents/eb1166ee92a84d6805d8ca41/w/e42ced186f5228f00042bc15/e/d9e3abf1aa01191ffa3bdf12