Hi Kat, sorry for the delay. The architect who did this project was out of the country but I found out the colour you like is called Monument... hope that help you make some decisions on your project! Good luck.
Wall colour and kitchen colour
Choosing colour bond roof colour to blend in with terracotta tile roof
What colour(s) should we paint our 1910 two story weatherboard home.
external plinth colour to match existing colour choices