How would you wire an RGB LED bargraph?

I want to make an RGB led bargraph with about 7 LEDs, the whole bargraph would change color at certain point, I want to hear/see some of your ideas how would you wire them, preferably with few TLC5940 chips, but any simple schematic would be helpful.

By multiplexing the TLC5940 you can control 64 LED elements or 21 RGB LEDs with one chip, like I did in this project:-
http://www.thebox.myzen.co.uk/Hardware/Mini_Monome.html

And by multiplexing I won’t be able to to make them change color smoothly or fade right?

as long as you do it faster than the human eye can "update" it will appear smoothly, even though you know you doing X steps per loop