Blender 2.78c Cycles particles change color by age Thank you for your time reader!

I want to change particle material colors by their age.
All threads and accepted answers I found dont work for me.

The setup I found in other threads is this:


The color ramp works.
If I switch the colors the particles become white:


After some trial and error it feels like no values are coming out of the particle info node.
For example if I turn the divide value up/down - nothing changes at all.
If I take an "add" node I can see clearly that all particles change independent from their age.

Does someone have an advice for me?
Even a method to see what (if at all) values come out of the particle info node would help me.

Thank you a lot for your precious time in advance :)

Blend file:
Here's what's going on, from Blender Docs about Particle Info Node:


  This node currently only supports parent particles, info from child
  particles is not available.


So your only option is to turn off Particle Children and crank up Particle Number to make it 'similar'.

Also if you turn on Parents in Particle Render section some of them will be white but only a few.



I've checked also in Blender 2.79RC2 but it's not working there either.