% Make \textcolor work using https://tex.stackexchange.com/questions/390127/textcolor-with-tex4ht
%    \begin{macrocode}
%<*cfgXimera>
\makeatletter
\Configure{textcolor}{\HCode{<span style="color:\#\tsf@color;">}}{\HCode{</span>}}
% redefine \textcolor command
\let\oldtextcolor\textcolor

\renewcommand\textcolor[2]{%
  % we need to convert the current color to hexadecimal form usable in the style attribute
  % the \tsf@color macro is used in the \Configure{textcolor} configuration to insert the
  % CSS color
  \extractcolorspec{#1}{\tsf@color}%
  \expandafter\convertcolorspec\tsf@color{HTML}\tsf@color%
  % call the original command
  \oldtextcolor{#1}{#2}%
}%
\makeatother
%</cfgXimera>
%    \end{macrocode}