I swapped out all my internal lights for Blue LED's. They put out less visual light than the std factory lights did but the mellow blue glow really grew on me. I have had many comments from people and drivers pointing at my interior while parked or whatever. I like your lighting under dash by foot well. The door lights just don't enough power to light up near your feet IMO. I might follow your idea and add another light behind the dash down low. The light bars you added are a little much for my tastes......but thats just me.
Overall the blue LED color does look nice if its not too bright IMO. I have no regrets