What beautiful mosaics. The grey would be a good choice. Other options: if you are after something traditional, perhaps a cream/taupe/beige paint. If you are after some drama, a berry colour similar to the dark tile. Add a small table and chairs or a bench and some downlights or period feature light, a door mat and a plant or two in a pot.

Lovely print. I had a peacock feather print and I had a colour called glacier Grey behind. Think it was Wattyl . Again like your other walls it is a greenish grey but darker. I also had my prints on a charcoal wall..loved that too. As you said the picture ties in with the chairs and now it's not necessary to add more matching colours. I'd buy a couple of sample pots and paint large pieces of cardboard. With the other walls I would consider painting them in whisper white (Dulux) a very universal colour that ties in nicely with all colours.

Unless you have the money to update everything else to better complement the bricks, painting them will give you a much more updated look. Over the past 18mths I’ve been working on the front and landscape of my current house, including painting the bricks and it has made the world of difference! I’ve attached a before and after photo! Good luck.

You could go one of three ways 1) explore if you are in a heritage zone and your council gives grants to restore/reinstate heritage features. In which case that’ll help the $ kitty and identify colours from that era 2) strip the uprights/pillars and doors back to natural timber and seal them as a nice soft contrast to the cottage green. Can also pay company’s to dip your doors to strip paint off for you. 3) get out the colour wheel and get a complementary white and charcoal to your cottage green. Doors & frames charcoal. Walls white.