| CINNABAR | Known as vermilion as a pigment, a red ore of mercury after which a groundseland ragwort-feeding day-flying moth is named (8) |
| VENETIAN | - red; ferric oxide (jeweller's rouge) as a pigment; a colour used by Henri Matisse in some of his paintings (8) |
| LAKE | A pigment; a body of water |
| RUBYSILVER | Rhombohedral dark red ore |
| CUPRITE | Certain red ore |
| ARSENIC | Based on Persian for "gold", a toxic element with compounds including orpiment, or king's yellow as a pigment, once used as an untraceable of murder known as the king of poisons or poison of kings (7) |
| PASTEL | Woad; a chalk-like crayon of ground pigment; a work of art made with this; a pale hue, such as baby pink/blue; or, a light poetic piece of prose (6) |
| ORPIMENT | Yellow sulphide mineral of arsenic formerly used as a pigment, similar to the red realgar (8) |
| REALGAR | Ore of arsenic used as a pigment (7) |
| HEDGEBROWN | Also called a gatekeeper, a mainly orange-coloured butterfly feeding on brambles, ragwort, wild marjoram and wood sage (5,5) |
| AZURITE | From a word for "blue", the cerulean-coloured mineral chessylite occurring in malachite, used as a pigment since Roman times (7) |
| OCHRE | Natural earth containing ferric oxide, silica, and alumina which is used as a pigment (5) |
| UMBER | A brown earth used as a pigment (5) |
| SIENNA | A natural earth containing ferric oxide used as a pigment (6) |
| LAMPBLACK | Form of almost pure carbon used as a pigment (9) |
| VENETIANRED | Natural or synthetic ferric oxide used as a pigment, especially in painting (8,3) |
| SENECIO | A genus of plants that includes groundsel and ragwort (7) |
| MASSICOT | Lead compound used as a pigment |
| LAMP | Soot used as a pigment |
| GAMBOGES | Yellow gum-resins used as a pigment and in medicine (8) |
