- <boolean id="rotate" _label="Rotate Around Attractor" arg-unset="-rotate false"/>
- <boolean id="ride" _label="Ride a Trained Bee" arg-unset="-ride false"/>
- <boolean id="zoom" _label="Zoom In and Out" arg-unset="-zoom false"/>
- <boolean id="box" _label="Show Bounding Box" arg-unset="-box false"/>
- <boolean id="freeze" _label="Freeze Some Bees" arg-unset="-freeze false"/>
- <boolean id="allow2d" _label="Allow 2D Attractors" arg-unset="-allow2d false"/>
- <boolean id="slow" _label="Slow Bees with Antifreeze" arg-unset="-slow false"/>
-
- <!-- #### -slow [True] -->
+ <number id="ncolors" type="slider" arg="-size %"
+ _label="Length of trails" _low-label="Short" _high-label="Long"
+ low="-20" high="-2" default="-10" convert="invert"/>