How are the con colors determined in MySEQ?

I had my level 65WAR in Plane of Nightmare last night. MySEQ showed a level 54 Blood Raven as dark blue on the map, but when my toon con'd it, it was actually light blue.

My level 28 BST in Shadowhaven conned some level 20 (dark blue in MySEQ) NPC's and the game showed them as Low Blue as well.

Aren't con levels static? they dont change in different zones do they ?