I think the idea of a center panel would be nice... they really are beautiful blocks, but a calmer center panel might give your eye an area to rest for second. The right borders and sashes would do it too as one quilter already suggested.
I just did a baby quilt using very similar colors! These are the colors my son/daughter-in-law picked for their nursery (it's a boy).
Sharing just for funzies... : )
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