Hi Rachel
I see you have children from the garden toys ,I would go for dark it’s a new extension and the gutterings are black so it will pull it together
I went for sliding doors across the back because I could have larger panes of glass and a narrow sight line bar
Giving us more view ,so 6mtr door split into 3 panels 2 slide 1 fixed means I can open 2 up giving bi-fold open space look .
Very safe to slide open with children about & no folds for little fingers
& mine have been in for last summer & very rarely had both open as we don’t really get that sort of hot weather so closed or 1 open in hot weather so more glass and less frames was important to me ,lots for you to think about
Good luck & re-post your decision picture .
Q
glass doors
Q