Onion skins are one of the most wondrous “compost” colors. Their beauty lies in how easily accessible they are and how often they are overlooked as waste in grocery stores, restaurants, and even your own kitchen. The skins, both yellow and red, contain the potential of deep saturated oranges, golds, ochre, and dark green. With a concentrated dye bath and enough time for the fibers to steep in the dye, these earthy hues truly glow. This project is a combination of dyeing and painting with mordant and modifying guar gum pastes to create extrasaturated and layered painterly color effects—creating a natural onion skin-dyed Rothko-inspired painting.