Ok Ive looked at Particle Color based on where the particle is emitted? and more pointedly Take object color of underlying Emitter
Trying to get emitted particles to take on the color of the emitter, depending on location on the emitter. Here's the emitter and its material (per the question):
Then I select that object in particle's material, pulling from a group
What is wrong here? The result is just the particles being all blue/whatever, not mimicking the emitter color.