_label="Speed" _low-label="Slow" _high-label="Fast"
low="0" high="20000" default="10000"
convert="invert"/>
<number id="ncolors" type="slider" arg="-ncolors %"
_label="Number of Colors" _low-label="Two" _high-label="Many"
_label="Speed" _low-label="Slow" _high-label="Fast"
low="0" high="20000" default="10000"
convert="invert"/>
<number id="ncolors" type="slider" arg="-ncolors %"
_label="Number of Colors" _low-label="Two" _high-label="Many"