Secondary Line Highlight

This is a tiny change that imo would go a long ways to improving workflow. To be clear what I mean is this: right now you can only highlight one thing. I usually have it at lpb, so every beat is highlighted. Working with 12 lpb+ can get a little hairy to visualize, and it would be really cool if you could set a secondary highlight to say, every 3 lines so you can see still visualize 1/4 beats easily, or change it to 4 lines for ez triplets visualization.