I think we did calke green, well the B&Q colour match of it, and it's great. I reckon our room is smaller and darker than yours as well, so you'd be fine from a not-being-too-dark point of view. White cornicing looks nice above it.
I think having white above a picture rail might lighten it too. Cheers. Should not have ripped the lower lining paper but learning with this whole thing
I think we did calke green, well the B&Q colour match of it, and it's great. I reckon our room is smaller and darker than yours as well, so you'd be fine from a not-being-too-dark point of view. White cornicing looks nice above it.