Lighting a volume with a bi-color point light I would like to light the center of a cylinder volume with a gradient light White -> Red -> Blue radially from the center to the border.

I created the cylinder normally and applied a volume material: 



Then, I created the light as a point and applied a blend texture like this: 



But I don't get the expected result (the center should be red then white) : 



The tutorial where I have seen this method is tagged as outdated. 


Do you think it's the reason for why it doesn't work?
Do you know how to make a colored gradient lighting of a volume ?


I'm using blender 2.72
I think your problem is with the scale of the mapping for the texture.
I made a test using an empty to control the mapping. Changing the scale of the empty or the size on the Mapping controls did the trick.