Yale's MSL Index (part of the Cuneiform Commentaries Project) lists
LAGABxME+EN (BARA6, MEN4, PARA6) as "
agû" or "
šarru" in Akkadian, the former of which I think means "
crown" amongst other things, and the latter "
king" or "
throne" (of course I could be completely off track here).
I'm not sure how this relates to the symbol being "a color term" (kingly
gold or priestly
white comes to mind perhaps?!), but there may be others on this forum, or on another forum specifically targeted to students of cuneiform, who could steer you in a clearer direction. I recall Akkadboy on the previous HTLAL forum studied Babylonian languages, but I'm not sure if he's migrated over to our new forum here yet.
Good luck with your research, and let us know what you find out - Sumerian is a fascinating language!
