It’s very difficult to standardize a palette. I think the best thing would be to base our style on the sprites that have already been made (for example, see notes on ice shriekbat below)
A few comments on the current assignments:
Runic Symbols
http://metroid.wikia.com/wiki/Runic_Symbol
The screenshot in the URL above has four of the five. The fifth is on the middle panel that flips around. A sketch of it can be seen lower on the page (looks like a hammer). I just checked to see if the symbols are the same in other rooms – gave up trying to find shots of the Sun Tower symbols but they’re definitely the same in the Great Tree Hall. If it turns out that Sun Tower’s are actually unique, nobody will notice or care anyway. 
Small flying bugs
These are found in a few of the small open-ceiling fountain hallways in the Ruins (where you can stand in the bugs and hear them make buzzing noises), plus the Metroid Prime Essence room, and maybe somewhere else. Honestly if you just make a couple pixels to look like a gnat then whoever programs the game can just make a swarm of particles and that’s that.
Ice Shriekbat (Phlakes)
Hairy Pomegranate finished a sheet for a regular shriekbat based on Timaster’s. The ice shriekbats should probably just be an edit of said sheet. Original shriekbat starts here:
http://z3.invisionfree.com/MP2D/index.php?..dpost&p=6407537
And keeps going until here:
http://z3.invisionfree.com/MP2D/index.php?..dpost&p=7055055
Timmeh would know more details about ice shriekbats and how they differ from regular shriekbats. I would think that there’s just a color difference but something inside me says otherwise, so ask Timmeh.
Seedling
Seedlings have been attempted a few times before (by Lady Ridley a long time ago and also by someone else in the AotM topic) but looking back at them it’s probably best to make a fresh version. Just remember that they’re bigger than they seem – go play Prime and morph and unmorph repeatedly next to one and you’ll see how big they are.
Mutant Fish
Just to clarify, these are NOT the giant frozen fish found throughout Phendrana (since I believe those existed naturally on Tallon IV before any phazon corruption happened, so they’re not actually mutants). The mutant fish are the ones in the Impact Crater. There are a ton of them swimming behind the walls of the missile refill station and they look like this:
http://asweetlife.org/sitefiles/wp-content…nny-Recipes.jpg
