Abstract: The present disclosure describes a tray assembly uniquely configured to be removably mounted to the back of a chair such as that of a beauty salon The tray may include cut outs or similar holders for color bowls. Further, the tray may have a lip along its outer perimeter to prevent spills of the coloring or other liquids. Still further the tray may include various storage and/or attachment apparatuses for storing immediately necessary tools to aid in the hair coloring, or hair treatment, or styling process. The tray is attachable so as to create an ergonomical environment for the hairdresser to allow access to all tools and accessories without the need of repetitive bending and/or reaching as well as to avoid spills or otherwise knocking needed equipment to the ground.