I was having trouble deciding between light or dark neutrals, so I finally took a photo of my fabrics with black and light, and taped it to the bedroom wall, where my eye would fall on it unexpectedly. That helped me realize that my colors aren't bright enough to show well against black (particularly the red), so I will go with light neutrals. I found one I liked, so will go with a constant neutral for the first time on a Bonnie mystery.
I also very impetuously bought a backing fabric. I never choose backing until a top is complete, except for Bonnie mysteries, where I can't seem to resist jumping the gun.
Only two more sleeps to go until the first clue! Friday mornings are such fun during mystery season.