Change colour of bitmaps automatically

Hello. 

I get .jpg .png .pdf files from customers which are no vector-based. 
All CYMK colours make no problems. 

But I need to change the "white" colour to a "special colour palette colour" so that my UV-Printer recognise that this needs to be printed in white (rdg_white) from Roland UV Printers. 
Vectorizing everything is too much work, and I think just changing the colour in the bitmap will do the trick. 

So the question is... can this be made automatically somehow? Like a script? Within corel or photo-paint?

That's an example file what I get:
https://www.dropbox.com/scl/fi/mr0rl0btmet9jwnavi38r/Logo.png?rlkey=jni1a85jwbb1xhyqh7l7t3yb1&dl=0

Thanks,

Roelli.