Very cool.  Seems to work with Domino 8.5.1 and Firefox 3.6.13 except for this:

1. selecting the last option in themes list (Harmony) produces an error:

Could not load 'dojox.charting.themes.Harmony'; last tried '../dojox/charting/themes/Harmony.js'

2. selecting the last option in charts list (Grid) produces an error:

this.stack[this.plots[_51]].connect is not a function
 

BTW, thanks for moving to the Apache license.

cf