I've found color to not be that great of an indicator with DW1 specifically as I've read, and seen with my own eyes, how it can act a little funny and turn dark quickly even without being used.
I've been using it in my Hondas since it came out with no trouble whatsoever, but I did read a few years back it has a propensity to darken very rapidly even when left in a container in the sun, yep I had to try it myself. I dumped a little bit of brand new bright red fluid into a clear cup similar to what you have and l left it out on the deck on a 85 degree sunny July day for about 8hrs and it went from bright cherry red to a darker maroon-ish purple just sitting there. It still looked better than what you're showing, but the best way to tell if it's trouble brewing or simply nothing to be concerned with is a UOA, YMMV of course and my "test" was far from anything scientific, but I found it a little interesting is all