I would point out that unless you are being specific to K-12 educators (and if you are, that's fine) but college instructors such as myself may not have formally studied pedagogy, and therefore wouldn't find much meaning in light (baby) blue. When I graduated from the Faculté St. Jean of the University of Alberta, my ceremonial colours were lavender (of the faculté), with a gold stripe to indicate I had studied sciences.

Can't make any promises on whether I'd want such a kilt or not (if it were appropriate for non-K-12 teachers) it would depend on how much I liked it, and how much money I had at the time.