I want to colour only the hydrogen atoms in a cyclic molecule using the Chemfig environment. The atoms are placed over a nitrogen atom, with a positive charge. But when y draw the molecule, the group "NH2+" are misplaced. The bonds must go over the Nitrogen.
\documentclass{article}
\usepackage{chemfig}
\setchemfig{atom sep=1.5em}
\begin{document}
\chemfig{*6(--\charge{45:1.5pt=$\scriptstyle+$}{N\color{red}H_2}----)}
\end{document}
Here is a picture of the problem.
I tried some strategies, using the symbol | for example, for separate the group, or with the bond options like [,,,1]. But these seems useless. Thanks in advance for your help!