*Let's say I took a set of saucepans, painted them yellow'
You have reminded me of the time DH and I went to the Venice Biennale. It's very large, my feet hurt and honestly we thought most of it was a bit shit(apparently it was widely acknowledged as a bad year)
We got to the British Pavilion which that year was Sarah Lucas, an artist I'd previously not had much time for.
Dragged my sore feet up the hill to see a giant custard yellow phallus. After all the tedious and worthy stuff we had walked through it was just so funny and joyful.
She had chosen the colour because 'who doesn't like custard?'
So yes, I think your custard yellow saucepans could work if you created a successful context for them.