I like the new look. And, when editing I'm struggling with seeing where the wave crosses the zero / mid line. Meaning, when I zoom in to see where to edit a note/sound, I look for where the yellow or orange or blue wave line is not actively above or below the line. But on the dark background it's so hard to see. Sometimes it seems slightly above or below it.
 
How do you guys do that? Is there an easy way to see that better?

Enable Snap to Nearest Zero Crossings in snap preferences, and You won't have to zoom so much. But it's quite possible (highly probable, actually) to have two consecutive sample values on either side of zero at most zero-crossings.

Thank you for that. Very cool feature/tip.
 
Any input on easier visibility?

Maybe try setting the yellow foreground color option; I often use that when I want to see waveforms more clearly.