I have, however, done the best I can by selecting a constant view close to my house that includes greenery, white walls, and red terracotta roofing tiles to ensure variable colour. I also worked on the photo's in early October when we had a string of very sunny days. The results are below, 12 shots each roughly one hour apart
The difference between the images is not as striking as I expected (all are processed to the same WB - "Daylight"). The problem is likely to stem from the shade generated as the Sun moves around the sky. Very noticeable is how the grass goes yellow in the Sun and how the white walls wash out in the strong light. The red of the roofs changes through the day, although again this is light versus shade.
In later work I will look at the colour of light at different times of day - this was a very disappointing exercise that proved very little that was not already common sense.