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