Not too much for me to say about this wallpaper that hasn't already been said: Dalarty has provided a descriptive walk through all the way from the concept idea, to its execution and ultimately its fruition. And you can really see how that careful planning paid off. But it just goes to show, good ideas take time---and a whole lot of patience!
Using the term blue/red/etc magic is a bit awkward. I'd be incline to use Science/Nature/Magic/etc factions instead. Works better with Location cards. The term mana can be replaced by faction points.