The color of the first thing anyone makes
Ask a child to make something out of red clay and you will get an apple, a heart or a toadstool, usually within a minute of the bag opening. There is no better evidence that a color is doing its job. Red is also the shade that carries a finished piece across a room: a scene with one red object in it reads from the doorway, and a scene without one tends not to.
This is a clean bright red rather than a dark crimson. White gives a convincing pink if you do not have the pink; a pinch of black gives the deeper tone of a cherry or a brick.
Working with it
Same light foam texture as the rest of the shelf, with immediate give and no crumbling at a rolled edge. It takes a surface texture well, which matters for strawberries and for anything that should not look poured.
One practical note that applies to the strong colors: red transfers onto pale clay and onto hands. Work it after the pale shades or wash between them, and the white stays white.
Drying and finishing
A small fruit dries overnight; anything much larger should be hollow. Dried red keeps its intensity rather than chalking, and a coat of gloss sealer turns a matt apple into one that looks picked. That is a two-minute job and it changes the piece completely.