Baby room color

Has anyone painted the walls of their baby's room a darker color? Our color scheme is red, white, gray, and black. I wanted to do gray on the walls.

I suck at everything painting related. I'm terrible at picking colors. I have another room in my house that was supposed to be gray-ish, but the color looks more blue. 😑 Well now I finally started painting the baby's room and I think the gray is too dark! I'm sure once it's done and the walls are decorated with some other colors it will be ok, but idk. I feel like it might be too much/gloomy. I know he's not going to be in there staring at the walls all day lol, but still.