If im not mistaken, i actually have sat on that same SQ 777-300 plane in *A colours. It was used once before sometime mid year last year on the sydney-sin route b4 SQ decided to changed all Sydney-sin routes to 747s.
Terribly uncomfortable and no AVOD. I think i have also sat on a UA *A colured plane b4 in USA but the cabin looked old. Since then, i tend to have a bit of apprehension at the gate when i know its a *A coloured plane. Don't like it.
Thankfully, Oneworld doesnt require planes to have one world coloured on the bodies. It could be an eyesore seeing a globe on a plabe, don't you think??
cheers