Mmmmmm, beautiful scale and proportion on those windows! I like the mint green a lot in your photo. What is your reason for changing it?

I'm glad you said that, soberg, because I like the mint green too.

I'd paint the trim and ceiling the same. Maybe high gloss bright white trim to pop the straw color. Depends on your furniture as well

The mint green was poorly applied decades ago, lots of running and dripping, and in addition to that, though it's hard to tell in the photo, it's a very institutional color like the gray-green found on hospital walls or holding cells (at least those I've seen on TV) . ;-)

feeny, what do you think about an accent color on the inside window sash, and the mullions?

Glossy white is always an option. For a more contemporary feel, a smoky grey would pair nicely with the wall color. The key with trim is a semigloss finish, oil based holds up best. Very nice windows, best of luck!

@tailcloverfarm: I kind of love the effect of two tones on windows. It can be very striking. Is this the kind of effect you are imagining?

@feeny Yes, exactly, a two-toned effect indeed. And I'm not adverse to saturated colors.

It looks like you have a great outdoor space; I think the two-tone stops your eye at the color instead of taking it out to the view. It depends on the effect you're after.

@bluenan thanks, I never thought of that, the view is nicely pastoral.

If the #2 trim is a complimentary color to the view outside, as in upper right photo of sunroom, it will frame and accentuate , rather than stopping the eye. Compare which view looks best in that photo- the side window w grey, or the center window w white?

@studio10001 Thanks another great tip.

I like the mint trim...if you wanted to keep it, then you could paint your walls an off white or very light beige to really make the trim pop and become the more focused color of the room.

Just a comment for future consideration - paint the ceiling, then the trim, then cut the walls in and roll them. From a process perspective, that is much easier.