No to above colour suggestions I know grey is in but you're bricks appear very brown with no obvious fleck of another colour Tho primrose appears to be current colour and tho is not my fave it does lighten up your house well which is what you want for fascias and Windows. But drainpipes only must be darker than brick so try jaspar or woodland grey. Gutter can be roof or fascia colour prob fascia colour to give more light contrast relief I'd play on colorbond visualiser go see what pops against dark brown brick - white or surf must may be too stark but maybe if you know your brick you could ask manufacturer for suggestions

We have had the same dilemma with lighter multi colour bricks. We used an interior designer to help.... We painted large sheets of cardboard with colour and put them against the brick... Bought sample pots of colours as cheaper than making big mistake... Monument was recommended against our Sandstone & red/brown fleck bricks... No blue in sight. Other idea is to match a colour in your brick to draw out that colour as per the neighbourhood photo - take a brick to paint store to match. We will use red in brick as feature colour on garden walls.

Purchase one of these blade scrapers. After wetting the window frames, try a small area and see if that works. It will be a time consuming job, but very fulfilling.

Keep it light, your kitchen looks lovely and bright, I feel going dark would highlight windows instead of your lovely kitchen, it's cool how your handles match your window frames 😀