Change the colour of all particles on screen

I’m trying to make it so when the user clicks a button, the colour of all particles on screen change to a certain colour. Is there a way to change the colour of all particles on screen coming from the same particle emitter at runtime? I know there is the main module’s startColor property, but that only changes the particle colour for new particles, not ones currently on screen. Currently I’ve tried messing around with the colorOverLifetime module, but I just get these weird blend between the original colour and the new one.