That will be good for anaglyph.
Say instead of
set(hotspot[%1].url,'image.jpg');
to be able to use also this
set(hotspot[%1].R.url,'imageR.jpg');
set(hotspot[%1].G.url,'imageG.jpg');
set(hotspot[%1].B.url,'imageB.jpg');
However this may be seen as very low interes but will be useful to switch from regular to anaglyph, for example.
thanks,
Dorin