Can I color the unshared electron pair with Chemfig? With this


The oxygen becomes red, but his unshared electron pair remains in black

  • You are more likely to get the answer you are looking for if you include more details. Usually a complete working version starting from \documentclass all the way down to \end{document} would help a lot! – caverac Mar 11 '18 at 15:30

You mean like this?


\setlewis[]{}{}{fill=red, draw=red}


enter image description here

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