No joy.
Just to clarify, the 'Color' property is not working. Some of the others do work so I suspect this is just a dead ant.
ON/OFF and position work. It's sort of fun to make the thing jump all over the screen, but not particularly useful
On the other hand, the 'hidden' property has no effect so jumping the LED into oblivion and back may be a workaround for making it 'disappear'.
In another thread, it was stated that some or the scr.********* command have been replaced by mc.*********, but so far I cannot find any mc.*********xx functions that even have the word 'prop' on them. I'll keep on tinkering . . .