# Color Themes

This template contains 4 color themes,they are green (default), cyan, blue, plain, and there is a customization color option nocolor. You can choose green with

\documentclass[green]{elegantbook} %or
\documentclass[color=green]{elegantbook}


where plain theme is gray for all theorem class environments and paper structures. If you want to customize the colors, please select nocolor or use color=none , then define the main, second, and third colors in the preamble section as follows:

\definecolor{main}{RGB}{70,70,70}
\definecolor{second}{RGB}{115,45,2}
\definecolor{third}{RGB}{0,80,80}