This page will be updated over time with in depth and interesting advice on a wide range of areas that are worth thinking about when painting.
The human eye is easily fooled. Which colour do you think is darker? Which of the inner rectangles is bigger?
Again, look at the cross on each side. The left appears a greeny brown to me, and the right a light cream - almost as light as the background for the left side. But if you look where they cross in the top middle you can see it is the same colour.
The point of this excercise is to show that even with the best colour representation and careful choosing, the way you interpret colours based on their surroundings and indeed other factors can be great.
1. Read our fact sheet Getting the Best Out of Paint Colours to help you decide what to buy and to get the best out of what you have bought.
Expect many more articles and interesting reads to come in the future.