Crafts

It looks like you're looking out a window at the jungle scene outside. If you end up deciding to change it, I'd try going with a dark green, at least darker than any of the greens in the squares. Should still give the 'window' effect but not as much contrast as with black.

Instead of going to all of the work to take it apart, could you somehow cover the interior black stripes with a ribbon of a color the d-i-l approves of? If there is some way to attach it temporarily then maybe later it could be removed if the black is deemed not so offensive.

When my first grandchild(son) was born I wanted to make curtains and crib 'bumpers' for his room. Since my s-i-l and daughter both like black, I found a cotton print that had a small floral print of gold and maroon flowers on a black background. It was really elegant looking. Not what is in most nurseries to be sure, but it looked nice.

Good luck! What you made looks really great. How people can do cross stitch at all amazes me.