Spotlight on Terre Verte
Winsor & Newton Terre Verte is now a combination of natural earths and synthetic pigments. Extremely transparent, it has a low tinting strength and is fairly absorbent of oil. This complementary colour to reddish pinks, Terre Verte was most famously used as under painting for flesh tones, acting to neutralize them. This can be seen from the green faces in some medieval egg tempera paintings, where over time the reddish/pink layers have faded.
Earth pigments, and particularly green earth (Terre Verte) colours, are amongst the most permanent.