Some (very) small wishes

Hi Rui,

I'm just pointing out some things that would make it easier for me, but as always, my suggestions are nothing too important. Here they are:

(1) When tracks are muted, I think, they would be easier to visualize if they are obscured. When pressing the loop button, the parts that are outside the loop section ges obscured, that's the effect I suggest. That way when you press mute on a track it would obscure itself, same thing if you press "solo" on some, the non-soloed ones would be obscured.

(2) I would find it extremely helpful if there was a toggle button on every track, under the track number, that allowed you to toggle between 2 sizes of height. One small and one larger. Because sometimes I strech some tracks and if you're working with a lot of tracks it would be quicker to restore its size by pressing a button rather than resizing them.

(3) Depending on the theme I use on my DE, the "solo", "mute", "record" button on each track are harder to see if they are pressed or not. On some themes that's easy, on others it's not. It would be cool if it went back to when the buttons changed color on each track besides notifying it on the lower part of the screen.

I think that's all. Nothing big, but just a few things I would love to see in Qtractor.

cheers