Valpolicella Ripasso is a form of Valpolicella Superiore made with partially dried grape skins that have been left over from fermentation of Amarone or recioto. Winemaking in the region has existed since at least the time of the ancient Greeks.
Barium chloride, or any other barium salt, should burn with a green flame. When a barium salt is burned, the thermal energy is transferred to the outer electrons of the barium ions. They gain enough energy to excite them to a higher energy level. They then drop back to their ground state, releasing energy.
Below is a list of mixtures, starting from the dullest through to the most vivid and brightest green: 1  Burnt umber & Cadmium yellow light. 2  Prussian blue & Yellow ochre. 3  Ivory black & Cadmium yellow light.  Ultramarine blue & Yellow 1  ochre. Ultramarine blue & Cadmium yellow light.  Phthalo blue (Green) & Cadmium yellow light.