What style bedding are you drawn too? What is the wall colour? Inspiration: Black and white (or off-white) with deeper green accent pillow. Though this room is not carpeted , I thought this room would give example of how the colours and wood tone work together.

A grey colour with a green undertone could work nicely... this way working with the green fencing and trims. sample pots are definitely a must so you can play with strength of grey and ensure correct undertone. If budget allows vertical cladding could transform the space further and create visual height...

Dulux whisper white. Get a sample pot, paint a large piece of cardboard and see for yourself.

Lovely turquoise sofas, and your lounge has lots of natural light. What is the current wall colour? If you placed your sofas along both long walls, this would leave the window wall free for your view. Then you could have art on the walls behind sofas, or create a gallery wall of framed family photographs. A circular timber coffee table, or nest of tables, might work better in this scenario, with added benefit of no sharp corners for your little one.