Some fixes for Coloring tracks in mix console

FR-fix for coloring tracks in mixconsole

1: let color multiple selected tracks at once ( in mix console only one selected track can be colored at a time !! )

2: i like in Protools when you double click on the color section in a track it brings the color plate (and of course multiple selected tracks can be colored)

3: related to number 2- in a track in mix console at the bottom there is kind of “arrow” drop down menu for color ,it makes annoynes and out of focus when too many time navigating in mixconsole accidently the color changes and reset to default with this “arrow” changing method , will be nice to replace this method of coloring tracks in MC with no “arrow” drop down color menu (again something like protocols selecting/changing color is much more practical and not get in the way)