<number id="ncolors" type="slider" arg="-ncolors %"
_label="Number of Colors" _low-label="Two" _high-label="Many"
- low="2" high="255" default="64"/>
+ low="3" high="255" default="64"/>
<number id="speed" type="slider" arg="-delay %"
_label="Speed" _low-label="Slow" _high-label="Fast"