Nate:
One workaround would be to simply make the bone icons larger (through the Settings Menu).
For me, if I am in the Bone/Create mode - (on a Mac) - and I hold down the Cmd key, the parenting lines do disappear - but, I am unable to draw the next bone while holding it down. Releasing the Cmd key allows me to finish drawing the bone - but the red Parenting lines have returned - so I don't see how this helps.
Here is what I have been seeing in the latest Mac Trial version:

Thanks,
Greg Smith
The reason this is annoying is that I cannot judge how long to make the next bone (using previously drawn bones as a reference).
Also, I hate red markings and annotations - in general - and find them needless and distracting. If I need to see Parenting connections - there should be a simple toggle to allow me to do so - and, in Preferences it would be nice to change them to thinner lines of a less glaring color than red.
Thanks,
Greg Smith