I have been dutifully working on Alouette, and I've managed to catch up to the length I had before recognizing my mistake with the stripes. I will be much happier finishing the sweater now that it has symmetric color striping, but there was something interesting about the not-quite-as-rigid color changing. I think my next experiment with stripes will be a little more spur of the moment.
In the meantime, here's what I have hiding in my closet (because really, how many pictures of that sweater can you stand in a row?). It's all Dale Baby Ull. I wasn't sure about the orange before I held them all up with the skein of white, but now I'm convinced that the colors will work. I'm still waiting for a circumference measurement on the intended recipient, and I don't mind the short repreive. Having already missed the birthday, any further delay that isn't my fault is fine by me.