Because of the heat, you should not use dark colours on walls or roof. regarding painting of brick. Brick is an almost no maintenance cladding. When you paint it you've set yourself up for a big chore every 7 (on the west) to 10 years. Secondly, if you still want to paint it, you need to use special brick paint, or natural limewash. Bricks and mortar need to breathe. If they can't, you can have structural problems down the track. theres lots of information about limewash on the Internet.

Do you plan on replacing the existing windows ? Are you happy with the garage door, do you want a colour that will blend with it or do you want a complete change ? I suppose you need to decided do you want to blend in with the street and the surroundings or would you like to be bold and stand out from the crowd. is the garage door & window frames black at the moment ? It's hard to tell. Maybe you just need to change the cream to a timeless grey as suggested. That way you could save the expense and the hassle of new doors and windows. If your in Northern Aust I would go a shale grey on the roof as dark roofs can be hot. You could do all your trim black to match the windows & g-door

I am getting the roof tiles painted to black, and I was thinking to change the guttering to Colourbond woodland grey same as the fence and all the other exterior to Colourbond surfmist including the front door, do you think this would update my house or have you got any suggestions any would be of great help

Try a light grey (perhaps with green undertones). My roof is brown and my house is light grey. Looks great and a change from cream which is very predictable.