I use mine all the time so I'm glad I don't have the green light lol - I think it would just serve as an annoyance!
 
As said, if you have bluetooth you get the CC light on the dash, it is a little green icon that comes on in the bottom right corner of the instrument cluster.
 
mine you can do both by the way you all describe it,,,,a quick press up 1mph hold it until speed reached or to slow down the opposite.....so all are right, it,s even stated in handbook if anybody has read it,as both