From Property Talk Community Wiki

Paint Colour Selection

Tools to help with colour selection include:

Resene EzyPaint A downloadable tool that allows you to recolour pictures of houses to try different paint colours. You can also do this to a picture of your own house (although there is a time intensive process to define the different parts such as windows, door, trims, etc before it can be coloured)

Dulux MyColour An online tool similiar to Resene's, but limited to the inbult house photos (no ability to upload your own)