Can you change the default colors in falsecolor images

Hello All,

Got this unusual request. I am not sure how I can change that. Any
pointers?
Can I set custom colors based on say min/max and number of desired steps in
between?
I am looking at both Luminance and Illuminance falsecolor images.
Has anyone attempted that before, if yes, any examples?

Thanks,

Shri

P.S> Apologies for my past emails with attachments, I promise I will be
diligent next time!