Hi jnk,
I think the custom action will really improve usability. If you take a quick peek at this thread you can quickly figure out the struggle and these are not even half of the items of my sleeping room. This is why i wrote a fade scheduler (here on the very bottom) so I can apply a generic fade on a channel.
This is why my idea was to get rid of the fade configuration in the items-file all together and put them in the rules-file so other people do not have to go through the same struggle.
What do you mean with Color value for dimmers and Dimmer-Thing?
Another thing I observed was that fades the colour of the fades does not really run synchronously.
When I turn my RGB Strip on with ON[FADE|1000:255,255,200:-1] and then off with ON[FADE|1000:0,0,0:-1] I get a blue afterglow (should even be worse with longer fade times). I figured this is because of the rounding error in fade calculation. My advise would to switch to float for fade calculation and then round to int before sending.
Have you observed similar behaviour?