During this transition, some artists painted with both tempera and oil paints. One way experts can tell them apart in paintings is by looking at differences in the surface texture and color blending.

Now, scientists may have cracked one using chemistry and physics. Around the turn of the 15th century in Italy, oil-based paints replaced egg-based tempera paints as the dominant medium.

Water mixable oil paints are also less likely to stain and dry quicker. What's more and in general, the fewer paints in a set the more likely you are to experiment with colour mixing theory ...

To use the color mixing board, pour out equal amounts of ... Using a painting knife, thoroughly mix the paints until the colors are completely blended. If you don’t have a painting knife ...