I decided to pull up Fontana's June 23, 1967 original story outline to give y'all some more "original intent": Sarek’s name is Karek here. “Gav is a Tellarite, thick creatures of general humanoid structure, but with heavy fur matting on their bodies. Their atmosphere is one of intense cold; their clothes carry cold circuits to insure their comfort.” So you can see why Theiss designed their suits the way he did. Andorians are described thusly: “The Andorians are slim, humanoids with delicate antennas and large eyes. They have no ears, and their hearing sense is in the antennas.” The attacking ship’s weapons are described as more powerful than the Enterprise’s. During the battle, Kirk is woozy and suffers double vision, which gives him an idea. He has Scotty activate “projector units” to be bounced off the alien and create life-size 3D images of starships around it. Confused, the alien crew is hesitant and the Enterprise is able to blast it. (?!?!) When the attacking ship is crippled they surrender and are beamed over. Their description: “The aliens…are revealed as the small, slim, catlike people of Orion!” The Enterprise crew learn “that the five others starships on the Babel run" were similarly attacked ending with “Several other alien ships have been defeated… either destroyed or captured… with the loss of two starships.” Ouch! The Orion plan is explained in more detail here: throw suspicion on the Andorians, which would lead to interplanetary war the Orions would avoid involvement in but could clean up from it. Roddenberry wrote "Not logical" in the margin next to this. The August 8, 1967 first draft included a Makeup-Costume Note which goes into more detail about the three main aliens here, the Vulcans, Tellarites and Andorians, with the latter's description ending "Andorians are pale blue. Because."