Inkthinker, did you message Brandon yet?
I have. It's not for me to talk about, though.
Edited version of the koloss is up now, folks. I've overwritten the older version, so as to not double-post the image.
I know (now) that the immature koloss come as small as 5', but to pull the smaller one down much further would end up pulling the lines in such a way so that it'd
look reduced, like seeing a xerox copy placed in there. Rather than do that, I put him on the upper range of the smaller koloss. I also made their eyes a bit more of a burning orange, to reflect what Sazed sees as "eyes the color of the sun at dusk" (TWoA, p215). And there's some small changes to the text and the numbers were fixed to reflect the more proper sizes. I could stand to build the contrast in blues better, 'cause darker is harder to work with, but hey... it's 5AM and I just spent 13 hours drawing animation. Cut a brother some slack.
Actually
reading the text (most of the descriptions run from pages 212-217 of the paperback edition), shows me a couple other things I might do better next time, such as making them a bit stockier at full growth and misshaping the facial features more to reflect the stretched "sack of skin" effect. I would probably also do a bit more with the sword-and-coinsack harness, such as it is... the koloss carry their weapons "...bound to their backs with leather straps. And tied to those straps [are] pouches" (TWoA. p216)
Brandon describes the pouches as being both "tied to their swords" and "tied to the straps", but if you have the coin pouches actually attached TO the sword, it leads to some practical issues. Just tying the sword to your back with straps also presents some functionality concerns, but there's any number of slipknot ties or other methods by which a character might tie or strap a sword while still making it easily drawn in short order. Figuring out little details like that is part of the fun, but for now I'm doing a more liberal version of "tied to the straps".