I'd like to have the equation colorization process be somewhat semantic, i.e., I can still type equations or math the ordinary way, except they occur in an environment in which the colorization happens automatically, so:
this:
_1\psi_1 \left[\begin{matrix} a \\ b \end{matrix} ; q,z \right]
= \sum_{n=-\infty}^\infty \frac {(a;q)_n} {(b;q)_n} z^n
= \frac {(b/a,q,q/az,az;q)_\infty }
{(b,b/az,q/a,z;q)_\infty}
would result in things like this:
(source: maresh.info)
without having to insert \color{} everywhere Is there a package which already does this?