In the Issue, @ps2 requested "stick to existing iOS conventions for color".

I was not quite sure how to do that:

• Increasing lineWidth without making color modifications was not sufficient
• Replacing Color.accent with Color.primary gave good contrast but was more black and white than @ps2 example graphics
• I adjusted the .foregroundColor from systemGray4 to systemGray2 to systemGray
  • I thought that looked better, but I could hear @itsmojo asking me to consider his "aging & colorblind eyes"
  • So I also increased lineWidth to 2

I captured a bunch of other screen shots, but I think these are sufficient.

Original and current commit Dark

Original and current commit Light