primary colours
Red, yellow and blue. You can't make them by mixing other paints.
secondary colours
Orange, green and violet (purple). Each is made by mixing two primary colours.
limited palette
Using only a few paint colours, like red, yellow, blue and white, and mixing all the others.
value
How light or dark a colour is.
tint
A colour mixed with white, which makes it lighter. Pink is a tint of red.
palette
The tray or plate where an artist mixes paint. It can also mean the set of colours an artist uses.