I like the left composition. To me it has a softer more shabby chic, cozy look. The solids look hard and stiff to my eye. imho. I would also , not add another sashiing or different sashing from the one on the left, again, because it is soft and gentle.
Hope the comforting goes well.
peace
EDIT: The other idea is nice too, a happier version. Depending on which way you go, adding more bright solids may take this cute quilt into clownland, imho.