Both yarns I'm using are semisolids. In places, the orange is quite light. In places, the yellow becomes almost orange. When those places coincide, the edges of the sun motif become blurred. I was going to say this makes the motifs more subtle than I'd like, but somehow "subtle" does not seem appropriate for this particular color combination!
I've decided to go with these two yarns anyway, because I love both of them.
I'm already looking forward to making another pair, in blue, using the moon motif. And then I'm going to use that incredibly vibrant yellow and make an extraordinary pair of yellow socks.