a not-ready proof

[kbuzzard]

This code

\begin{lemma}
    \label{ZHat.e_not_in_Int}
    \lean{ZHat.e_not_in_Int}
    \uses{ZHat.e}
    \leanok
    The element $(e_N)_N$ of $\Zhat$ is not in $\Z$.
\end{lemma}
\begin{proof}\notready
    I don't have a proof of this but it doesn't look too bad; maybe I'm wrong
    and it's hard? We will not need it later on.
\end{proof}

produces (on FLT) an oval with a green border (fine) but a blue interior. I want that interior to be orange or red or something.

In fact there seem to be two kinds of \notready proofs -- one is "I didn't write the LaTeX yet, feel free to write it for me" and the other is "this is a multi-year project, please see the discussion link".
Maybe I want \needsLaTeX to be orange, and \noplans to be grey?

Can I also edit the legend to explain my personal colour system?