Thank you ladies
No, I don't have enough of the dark blue or a blue print about the same color. It's not yet the size they want, I already checked with them a few weeks ago as I'm working on scrap blocks and want to donate that one too. Size needed is 56 x 80 so I have to be creative lengthwise! I can do that (I think). I could add an extra border.
Like OKG, I thought about a diagonal line but with a double needle is a great idea! I never thought of that! I think I will do SID around the pieced blocks and maybe some hearts and swirls in the darker blue squares.