A couple of the issues I see: 1. If one turns on all the sources many of the sources will use same color line. 2. The dark theme doesn’t have enough contrast,

A couple of the issues I see: 1. If one turns on all the sources many of the sources will use same color line. 2. The dark theme doesn’t have enough contrast, the font is gray on a black background. There are other issues that are hard to put to words, I look at the graph and it’s hard to find a specific date or time.