Whats a good underpainting color for floral, specifically FoxGlove?
There’s no simple answer. Some artists prefer to start with grey and build it up (with the very delicate shading in the glaze this can look beautiful). Some will go for a compliment, so raw umber-like browns and yellows perhaps. I often go for something like the final colour but duller and a slightly different hue, so perhaps a blue, perhaps a red for a violet flower. I like oxide of chromium and yellow ochre for underpainting floral greens.