If you set Overlay Amout slider to less the 100% and then pick a color either form the color picker or the preview, the slider jumps up to the default 100%. So if you are trying to pick the right color you always have to go to the transformation dialog a and set it back to the desired value.
Also, no matter what Display Preview button is pushed on the Composite dialog, as soon as you pick a color the preview is changed to Display Preview (leaving the Synchronize Scrolling button pushed down).
Just for illustration, with a Blend operation and Display input Side by Side pushed down, when you pick a color, you get output just of that color.
Composite Overlay Amout slider and Preview buttons
Moderator: jsachs
Re: Composite Overlay Amout slider and Preview buttons
Fixed for next release.
Jonathan Sachs
Digital Light & Color
Digital Light & Color