Pro's Acrylics 6 color set

Acrylic paint is fast drying paint containing pigment suspension in
acrylic polymer emulsion. Acrylic paints can be diluted with water,
but become water-resistant when dry.
6 essential colors are included in the acrylic set. Each color contains a 30ml jar.
Colors are: red, middle green, yellow, burnt umber, royal blue, and yellow ochre.

Yellow ochre and burnt umber are "must colors" for browning cookies and bisquits.
You can add a bit of red color with these two colors for dark.