I found this Bananafish set on amazon that's not EXACTLY what everyone is looking for but just in case it sparks someone's eye. Since it's quite affordable i would nix the crib sheet (or save it) and get a navy blue polka dotted one or pin striped one...something like that to pull more navy blue in it.
Re: PSA: Lime Green Blue and White Girls
That's what we went with and we love it. I don't have pics of the bedding, but here are pics of our walls after they were painted to match the window valance (a bit busy for a lot of people, but we love it.) The darker blue could be sub'd solid above/below/both the chair rail.
Also just found this....
https://www.bellablumaternity.com/ri3pccrset.html
Good god I need to stop spending so much time thinking about nurseries.
Blog: Baby Mama's Drama
Thank you so much - we LOVE it, but I can't take credit. DH and FIL installed the chair rail and DH painted the light blue above it. One of our friends "gifted" us a professional painter for a day as our shower gift. She painted the stripes. All I did was paint the "matchy matchy" ceiling fan blades.