I would like to know how to make it so light does not affect this object (the pinkish rounded square grid in the picture), so it's one solid colour, doesn't give off shadows, and doesn't let light settle on it.
So far, I've been able to remove the shadows it makes by going
material settings ->
settings -> and then turning
shadow mode to none - but light still settles on the object.
I just want it to be the colour I set it to without having to make lighting objects for it. I want it to not be affected by light.