Mathematics can be styled by CSS: For example, here is small red text: $\sqrt{\,1-{x\over 1+x}}$. There are extensions like \color and \bbox to make your mathematics more interesting: $$ \color{red}{R} + \color{green}{G} + \color{blue}{B} \qquad\hbox{or}\qquad \int_0^1\bbox[3px,border:2px dashed green]{\,1+x^2\strut\,}\ dx $$