Yarn Choice Advice?

I don't just usually stop everything I'm doing and cast on yet another project. But I saw Anne Shirley in the Fall issue of knitty, I immediately thought, "There is this Louet Gems Fingering/Sportweight yarn I bought instead of their thinner version. I wonder if it goes with that Claudia's Hand Painted stuff?"
So now I need some color help. Would this be great, or would the resulting scarf be an eyesore? I can't quite decide. The Gems is more of a cool-toned red, and the Claudia's has more of a warm/peach-y pink to it.

Here are the candidates, picture taken with flash.


A closeup, still with flash. I was hoping that the Gems would be a lot thicker than the Claudia's, but as you can see, the difference is pretty much negligible.


And here, the two yarns without flash. I'm baffled by the similar weight. The Gems is labeled as a Fine/Sportweight yarn, while the Claudia's is simply called a fingering weight. They look to be about the same thickness to me. The scarf calls for medium and thin sock yarn, but even if they're both the same thickness, I think the end product would be pretty -- if the colors don't clash. What do you think?


Speaking of matching colors, the cats have this down to an art form. Note my camo cats, with Morgana on the dark blue blanket and Merlin on the sheet that's closer to the color of his coat.


They're being so cute in this picture. I was sick and both of them kept me company. It's the most wonderful thing -- they really can tell when their human is not OK.