david,
i have no UI, and the graphics will be almost entirely dependant
on what you provide (unless you choose not to provide, and then they'll be pretty bad....)
the idea is a sort of 2d fantasy RTS, with units based on
fire/earth/air/water .:. knight/sword/archer/mage .:. valley/plains/hills/mountains
each unit in the game has these characteristics, and is effected by them.
2 color (or even 1) would be good for the "elements",
while more towards full color would be good for the
archer/ swordsman/ knight-on-a-horse/ mage (just threw that 4th one in there...did you notice

)
i also pulled some graphics out of your 2d rpg tileset to use as terrain...some slightly altered...
now if you're feeling ridiculously generous, you could provide me
with custom tiles for Valley, Plains, Hills, Mountains,
all with whatever sort of feel you do the rest of the work goes in.
you are a great help to us! thanks,
bob