Here are some examples I found on the web (with as much attribution as I could gather):
|A green HH as presented on the blog Typewriter Hoarding.|
|Pink on meedily's flickr account.|
I have not found the blue, the yellow, or the charcoal/grey. If you know of a picture, let me know. If you have such a colored HH I would be really interested in getting one. Send me a letter, and we'll talk.
N.B. As far as I can tell, it looks like the colors were painted with some sort of sheen finish. The brown HH which is ubiquitous is always in a wrinkle finish. There is so little about these machines out there.