These are some of the coordinating colors. I hope my pictures show up. Which one would you go with? My mother in law likes the lighter color but I don't think it pops enough for a toddler room. Also, my objective is for a race car theme. There will be a road in the middle of the wall seperating by blue and green walls. The blue is the sky and green is the grass(if that makes sense). What color blue would you go with? The fabric is the color of the curtains.

another picture of the blues together with the green. Hard to tell in above picture

To answer your question which is "which color blue..." and I am left with two alternatives,
I much prefer the Olivia Blue over the Cool Morning.

From the color chart olivia blue looks nice.

I like the Olivia Blue best too.