Some of the nicest coloring I've seen so far; very nice there. I think that the look you're going for will never be quite the same since his maps were of a much larger scale than yours...his was a continent and yours is a city. I think that this map is done really cuz if you start adding things like roads and houses then you'll lose the effect. You may be able to redo the whole thing much larger so that you don't lose the colors and you'll be able to cram more info in.