/\$\$/ {
    N;
    /\\begin\{align\}/ {
        s/\$\$//;
        p;
        d;
    }
    /\\newcommand/ {
        N;
        d;
    }
}

/\\end\{align\}/ {
    N;
    /\$\$/ {
        s/\$\$//;
        p;
        d;
    }
}
s/lightgreen/Lime/g;
s/\{green/\{Green/g;
s/\{yellow/\{Goldenrod/g;
s/\{darkorange/\{DarkOrange/g;
s/:::/::: /g;
s/\\circ \- \\bullet/\\;\\laplace\\;/g;
s/\{align/\{align\*/g;
s/\\color/\\textcolor/g;