I went back and looked at the panel a couple of times -
The pinwheels appear to be the right color - but I think they detract from the carousel in the center. To me, they make the merry-go-round seem really small. Also - the other lines in the panel are curves and arcs - and the pinwheels are pointy.
They won't make the quilt look 'bad' - I just think something 'softer' would be better to try to make the top larger.