Change song number font color with songs.sty

I'm using songs.sty to create a songbook.

I figured out how to change the background color of the song number boxes by redefining \snumbgcolor like \renewcommand{\snumbgcolor}{green}.

I can also change the background color in the index with \renewcommand{\idxbgcolor}{green}.

Is there an easy way to change the font color for these to white?

MWE:

\documentclass{book}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}

\usepackage[usenames]{xcolor}

\usepackage[lyric]{songs}
\renewcommand{\snumbgcolor}{green}

\begin{document}

\begin{songs}{}

\beginsong{Bella Notte}[sr={\footnotesize Mel: Bella Notte}, cr={}]

\beginchorus
Nu er det nat, en vidunderlig nat,
åh så stille Bella Notte
\endchorus
\beginverse
Stjernernes skær, bringer himlen så nær,
jeg vil drømme Bella Notte
\endverse

\endsong

\end{songs}
\end{document}


Maybe it's not exactly the standard solution, but by listing all commands from the songs package and keeping only stuff with “num” in it using latexdef -ll -p songs | grep num, I found the command \printsongnum. Here is a redefinition of it, only adding the white color:

\renewcommand{\printsongnum}[1]{%
\sffamily \bfseries \LARGE \color{white}#1%
}


It seems to work if I put it in the preamble of your example. Since there aren't a hundred @ signs in the command, let's assume it's not a dirty trick xD

I confirm it works, and give an illustration. B.t.W;, needless to use the usenames option, as it's the default now.

% -----------------------------------------------------------------------------
% !Mode:: "TeX:Hard:UTF-8"
% PDFLaTeX this document and view or print it from Acrobat Reader!
% -----------------------------------------------------------------------------
% Preamble Starts here:
% -----------------------------------------------------------------------------
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[lyric]{songs}
\usepackage[svgnames]{xcolor}

\renewcommand{\snumbgcolor}{SeaGreen!60}
\renewcommand{\printsongnum}[1]{\color{white}\bfseries\Huge#1}

\begin{document}

\begin{songs}{}

\beginsong{How doth the little crocodile}[by={Lewis Carroll}]

\beginverse
How doth the little crocodile\\
Improve his shining tail,\\
And pour the waters of the Nile\\
On every golden scale! \bigskip

How cheerfully he seems to grin,\\