I think you are doing a grand job!
I was commissioned to create a racing quilt for a new baby ... if I had seen your project, it would have gone a lot easier <g>.
It will be so fun for baby to gaze at the black, white, and red ... the first colors they see ... and I remember well when the boy was a bored baby.
DD had told me about that color thing. I went to Toys R Us and got all sorts of baby toys in white, black, and red ... when he hung up the mobile, he threw his arms back, kicked his heels and tried to FLY toward it - - at about six weeks of age, it was pretty amazing to see his response and how changed he became with toys he could see! and enjoy.