Hi Tina, a photo or two would help tell the story if you have some?

Hi Tina. This house has Dune on fascias and edge of deck and down pipes. Timber wall is Pebble Grey or it might be grey pebble. It’s a dull day so looks darker. A slightly darker grey to Pebble is Heifer. Both tone well with Dune. If you go to paint shop look them up in the Dulux atlas, ask staff. Not available on sample cards.
If you have rough bricks consider getting them bagged before painting. Makes it a bit smoother but still shows mortar lines.