Playing with Colors

[Katie Wasserman]

It's possible to add color to LaTex expressions by including the color extensions with "\require{color}" at the start of an equation.

\[

\require{color}

\left(
\color{red}

\begin{array}{cc}
a & \color{green}
\left(
\begin{array}{cc}
\color{blue} \colorbox{yellow}{1} \color{green} & 2 \\
3 & 4
\end{array}
\right) \\
c & d
\end{array}
\right)
\]