Just a very brief update:
The first element now has a layer of black gesso primer. Now comes the hard part - actual painting!
There is an interesting color rendition (by Jeff Dee no less!) here at The Tékumel Project blog, and there is a concise entry about the Legion in the Tsolyánu army pamphlet. The Legion is notable in its lack of blue in the uniform. Reddish orange and white seem to be the main colors listed in the pamphlet; I intend to deviate somewhat from Mr. Dee's version and use the red-orange and blue for trim and white for the main color. I do like the shield colors he used, and will shamelessly imitate them!