Has it been painted green ? It may have been painted by some macho guy ,who thought yellow was not masculine enough .

Hey Pope. You would know better than me

It doesn't look like there was ever any yellow paint (That bit of yellow you see is electrical tape as the timber roller is split somewhat.
I'd be interested to know what this thing actually is. Maybe a later model of the center court perhaps? Anyway I don't wish to hijack this thread.
Pete.