Grey dust of last autumn's leaves, the taste that makes you pucker.
Bitter is a warm grey, close to green.
It can be described as warm, muted, greyish and dusty.
Set in black, because black reads best on it.
Resentment is a complex, multilayered emotion that has been described as a mixture of disappointment, disgust, and anger. Other psychologists consider it a mood or as a secondary emotion that can be elicited in the face of insult or injury.
Read on WikipediaBitterness, also known as bitter, is one of the most sensitive of tastes, and many experience it as unpleasant, sharp, or off-putting, but it is sometimes desirable and intentionally added via various bittering agents. Common bitter foods and drinks include coffee, unsweetened cocoa, South American mate, coca tea, Momordica charantia, unripe olives, citrus peel, some varieties of cheese, many plants in the Brassicaceae family, Taraxacum greens, Marrubium vulgare, wild chicory, and escarole. The ethanol in alcoholic beverages tastes bitter, as do the additional bittering ingredients found in some alcoholic beverages, including hops in beer and gentian in bitters. Quinine is also known for its bitter taste and is found in tonic water.
Read on WikipediaProper noun