Both versions look fine to me. I do find the reduced opacity version a bit easier to read, but ultimately which ever version you end up finalizing with will be fine. My eyes aren't what they used to be, so higher contrast is easier for me to see these days, particularly when dealing with a variety of colors. On the whole, I've enjoyed watching this develop, and, to be honest, everything you've been working on these last few updates is like a little extra icing on the cake, or, in my case, an extra tasty chew toy.