To brothers van Euc attribute with invention of technics of oil painting; it is inexact - a way of application of vegetable oils as binding substance was known earlier, but van Euc improved and gave a push to its distribution. Soon oil has superseded distemper. Oil paints in the course of time usually darken. Old pictures which we see in museums, at the occurrence looked differently, are more light and brighter. But painting of van Euc possesses really extraordinary technical qualities: paints do not wither also centuries keep the freshness. They are almost shone, reminding of light of stained-glass windows.