Random Monster Friday
From Starbounder - Starbound Wiki
"Random Monster Friday" refered to a weekly tradition of the Starbound team sharing examples of monsters assembled by the creature engine. It showed off the depth and variety of the combinations, and gives the community some insight into how the elements work together to assemble these monsters.
The monsters were generated by an external version of the engine, not the one that generates monsters in game. The external engine assigns colors to monster components randomly, while the monsters in game will have assigned palettes.