How to pass a color value as a macro? (Doesn't seem to work.)

[Victor S.]

I'm trying to define a macro, \someColor, that would hold a color value, then pass it to \color as \color{\someColor}, but I can't. Any help appreciated.

\(

\def\someColorA{##ff0000}
\def\someColorB{\#0000ff}
\begin{gather}
{\color{\someColorA}\text{hello A}}\\
{\color{\someColorB}\text{hello B}}\\
{\color{#00ff00}\text{hello}}\\
\end{gather}

\)

Neither text (A or B) is properly colored.

Thank you

[Davide Cervone]

The \color command does not process macros within its argument, so MathJax does not support the functionality you are looking for.  You could do 

\def\ColorA{\color{#ff0000}}

and then use

{\ColorA \text{hello A}}

but that isn't exactly what you are looking for, and you probably already thought of that.

Davide

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