To minimise costs, frame your windows, I would place a canopy above the front door (if this is the front door near the garage - if it isn't don't do) to draw your eye and paint the front door with strong wow colour - even if it is a few shades darker or lighter to what you have chosen for your window trims/roof line. Maybe large number near door also will drawn your eye to the door. Landscaping around the front will also add punch/wow - you don't have to do everywhere - but at least at the front and then you can work your way to the rest of the garden, but keep the rest of the lawn mowed (even if they are weeds) and edges trimmed. Look at a couple of other houses and pretend you might buy and note what your eye is instantly drawn to... go back to your house and note what you are instantly drawn to.... do you want to be drawn to those features? If not, make them blend and highlight the areas you want. I have just had another look at your photos - is the front door near the garage door or it is the one on the left hand...... if left hand don't place canopy at the garage end but would place some large planters (large plants too) to accentuate the front door entrance - you would have the space - but again do some landscaping in that area (the large pots can be placed in the garden beds (on a large paver) and smaller plantings around them, make the front door pop and place something i.e. large number on the wall next to the door. If the door next to garage is garage entrance not front door, then blend that door with the exterior (unlike what I had initially said when I first thought it was the front door). Tip - Just cause something is colourbond - you CAN paint it - don't think you are stuck with that initial colour thought when installed. i.e. paint your facia and gutter same colour and that will make it wider. (I have personally painted cutters and downpipes many times (when I want to change colouring). Just cause downpipes are connected to your guttering doesn't mean they need to be the same colour - I would colour them the same as the wall colour to make them blend - downpipes are not a feature. Good thing about paint, you can paint it again. A lot of paint shops will have colour consultants.

We do need a photo. What colour is the roof?

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.

I would pick one of the colours out of the bricks. I think lighter rather than darker so the house doesn't look top heavy. When you factor in the whole cost of the extension, paying a colour consultant could be well worth the money. I have added a single story cladded extension to my brick house. The colour consultant was well worth the money. For me, I didn't want it to look like I was pretending the cladding was brick, so went for a colour that complemented the brick rather than blending in. A lot of new houses have cladding bumpouts included in the new build as a feature, I think this is a good look that you could go for. The extension as a feature rather than try to disguise it.