I agree, get your own structural survey done before you get in contact with the planning so you know exactly what has and hasn't been done to the roof.
I like that colour. I think plain white tiles would look good, those rectangular shaped ones that look a bit like like old fashioned toilet tiles (this makes sense to me!) I also think pale blue looks good and, if you fancy a bit more colour, pink looks good with that green too. If you're not sure t...
I'd just sand it down, not to necessarily remove all the paint, but then put a good primer on and re-paint it. Bear in mind gloss paint needs to be spread quite thinly so that it doesn't streak.
