A spot color is one that is printed with its own ink. Typically, printers use spot colors in the production of books or other printed material. The spotcolor package by Jens Elstner is a first attempt to introduce the use of spot colors with pdfLaTeX. The xespotcolor package is a reimplementation of this package so to be usable with XeLaTeX or LaTeX+dvipdfmx. As such, it has the same user interface and the same capabilities. Version 2.0a added support for the xcolor package and so one can use spotcolors in TikZ pictures. In this version one can safely use spotcolors with the tcolorbox package and I have updated the package so to use the correct shipout hook provided by the LaTeX kernel. Apostolos Syropoulos 2021/03/01