incorrect background color special for dvisvgm

[davidcarlisle]

Brief outline of the bug

\pagecolor does not work with dvisvgm as the \special is using bgcolor rather than background as the keyword, see

https://tex.stackexchange.com/a/624253/1090

Minimal example showing the bug

\RequirePackage{latexbug}
\documentclass{article}
\usepackage[dvisvgm]{color}
\begin{document}

\iffalse
\pagecolor{red}
\else
\special{background rgb 1 0 0}
\fi

x
\end{document}