I found a website that might be quite helpful for you http://www.colourtouch.com.au/ to visualise what colours and finishes could look like on your house. You can choose a style of house that closely matches yours then choose a number of set schemes, or start with a blank canvas and play around with any colour / finish you like.

Perhaps a dilute strength of colourbond's Dune? Or Dulux White Duck 1/4 or Dulux Limed White.

totally agree and would not like to any of the above lollie pop colours, Using White & black trims is classic and ageless and works beautifully with the bricks and terracotta roof. The brief is to keep the budget in mind, and I agree with not rendering or painting the brick especially just the front. Other than what is already planned, I'd concentrate on painting windows and trims and as mentioned replacing the gutters and down pipes, making over the driveway and clean up and plant the garden. Something that might make the house look a bit more up to date is how the carport is filled, will the wall facing the street be board that's rendered , timber, cut metal sheets or 50's concrete blocks painted or not. When you used to fly into Sydney it was a sea of red roofs now they're all monument and the walls similar. cheers

I just googled & found this site, which quotes cost of R2.5 75mm. there are other suppliers as well. What was quoted to you for cost of roof installation, and was it itemised so you can see exactly what thickness the foil-backed insulation builder will use? I'm guessing the thinner (lower R factor). So, the new quote should reflect a credit for the cost of previous insulation, since it won't be used, then cost of thicker insulation added. Does that make sense? If you are unsure, best to speak with the builder. https://www.pricewiseinsulation.com.au/product/heavy-duty-fletcher-permastop/