t color to be used when rendering text.
The accepted values are listed with <code>-list_dither colors</code>.
</p>
</dd>
<dt>&lsquo;<samp>list_drivers</samp>&rsquo;</dt>
<dd><p>If set to &lsquo;<samp>true</samp>&rsquo;, print a list of available drivers and exit.
</p>
</dd>
<dt>&lsquo;<samp>list_dither</samp>&rsquo;</dt>
<dd><p>List available dither options related to the argument.
The argument must be one of <code>algorithms</code>, <code>antialiases</code>,
<code>charsets</code>, <code>colors</code>.
</p>