I think I'll ask once more since a lot of the guys from that thread are no longer very active (if at all).
I'm getting back into it.
I've taken a few days to familiarize myself with GrafX2 which forces you to adopt the indexed 256 color palette mindset of the arcade guys.
There are a LOT of great things about the program but it works very differently than most programs today (It grew out of Amiga era idioms borrowed Dpaint).
You'll spend a week or so just getting used to all the right click and left click options and menus. And its notion of brushes rather than selections. Also the Spare Page idiom.
It has some modern features too though, like layers and animation support. (Also you can extend the program with Lua scripts)
Annnnyway here is my pixel art gallery. (Some very very old stuff there from when I was like 18 and had worse grammar and spelling)
I kind of helped bring some popularity to shmup sprites to Pixel Joint in the early days (2005ish?)
I wouldn't shut up about the genre, then people got a taste of the 'Pachi spritework.
Here is my latest little ship. (My work is not for sale currently, sorry indie guys)
16 colors, 90x123 px

So who here is into making game sprites for fun?
Would anyone like to take a crack at designing a low color ship say 32x32 pixels?
I'll play along too of course.

The thing is to just have fun and design a low color sprite as if you could make any shmup you wanted.
Ideally keep it under 20 colors, bonus points for using less than 16.