Color Key? please help

I was trying to make an animation with a leaf changing colors but I couldn’t figure out a way to lock the the color from one key to the next. Could some one please help me?

Mouse over the buttons window, in the material section. Press “I”, and click RBG.

Select the object, in the down window select IPO window. Select Material. Select R G B channel. Create Benzier Curve from 0.
Run the animation, Colour will be changed.
I have uploaded one file color_change_from_kkrawal.blend as example.
download this file. It has animation form 1 to 100 frames. Just open and press ALT+A
You can render and see also.


color_change_from_kkrawal.blend (188 KB)

Thank you very much for your help.