I saw above a shop doorway - in Hampstead, as it happens - the style of window that looks to me like orange segments. So, naturally, I made this into a small design on a simple hexagonal/triangular grid.
Trying out gouache, it turned out well - very bright colours with a mix of the opaque yellow with transparent red to make the orange, and then a bright teal-like colour for the spaces in between.
Listed as ever on Etsy here