What colour paint with this wallpaper?

[AlwaysReadyForABlether]

I really like this wallpaper and I'm thinking of using it in my spare bedroom. It would be as a feature wall (yes, I know they're not a favourite but I like them!) so what colour paint should I use on the other walls?
The bed is white metal, the furniture is white with pine tops and the carpet is neutral.

I am toying with the idea of using the lime green colour - I think it could look really fresh against the white. But would it be too much? Should I play it safe and go for the greyish tone or a neutral?

Green could look nice. Only difficulty would be matching the green. If the paint comes out a slightly different shade to the flowers it might look a bit odd.

I would try to match the background colour of the wallpaper.