Definition of palettes:
(n) :
(painting) A thin board on which a painter lays and mixes colours.
(n) :
A set of colours available to be used (or mixed).
(n) :
The range of colors in a given work or item or body of work.
(n) :
A set of makeup including a variety of colors, often packaged together in a tray.
(n) :
(computing, graphical user interface) A visual selection of colours, tools, commands, etc.
(n) :
The range of tones or tone colors in a given musical composition or performance.