This is a portable tray which artistsPeople who are engaged in a broad spectrum of visually led ideas and activities aligned to the expressive arts use for mixing colours upon. The term ‘artist’s palette’ refers also to the range of colours that an artist uses. A palette knife is a flexible blunt knife used for both mixing and applying paintA coloured substance that can be thickened or thinned and spread over surfaces. Paint can be water soluble, oil or plastic based, and have opaque or transparent qualities. For further information please follow thus link. Paint is made up from three main things: pigment, to give it colour; a medium, (such as oil) which is used to support the pigment; and 38 something to thin it down, such as water or turpentine..