You could use any of the application examples from the data sheet that fit your available components and instruments. **broken link removed**. Four LED drivers might be the simplest.
Hi,
You could have a circuit set up with four non-inverting amps with a gain of 2 with an input of 1v. So you could have 2 LEDs in each output - a red and a white. The red should light up while the white should not.
I hope you got what I meant. If not, then let me know, I'll try to provide a schematic.