No, ppchtex is not dead...
I would like to use color.
1. color= and rulecolor= does not appear to be implemented (mkiv)...
2. how can one change the color of the bonds?
3. using \color[red]{} causes the text to be offset.
"minimal" example:
\setupcolors[state=start]
\usemodule[chemic]
\starttext
\startchemical
\chemical[ONE,SB,Z0][C]
\stopchemical
\startchemical
\color[red]{\chemical[ONE,SB,Z0][C]}
\stopchemical
% text "C" is offset...
\startchemical
\chemical[ONE,SB,Z0][{\red C}]
\stopchemical
% OK, but I would like to draw the bonds as well in red.
\startchemical[color=red]
\chemical[ONE,SB,Z0][C]
\stopchemical
% "C" is red in mkii, black in mkiv
\startchemical[rulecolor=red]
\chemical[ONE,SB,Z0][C]
\stopchemical
% bonds are black, "C" is red in mkii, black in mkiv
\stoptext
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