fashion colours for children

I have noticed that certain colours follow the fashion, or is it other way round? Anyway, this colour, and its combinations has been around at least two years now, and it is still going on. How popular can it be?

I made my part of bringing this colour back into life. I got the yarn over half a year ago as a Christmas present (thank you Laura). I finally got back to my original plan of making woollen products for little children since I haven't been working on knitting projects for a while.

The final product was a pair of cute purplish pink colour mittens. I originally combined this "ready made stripe yarn" with a total one colour dark purple yarn on a wrist and thumb parts, but I didn't like the end result it being too contrasty. The sensitiveness of this multi-coloured yarn was somehow disappearing when I combined it with the darker colour. Even if it would make sense to combine these two yarns, it didn't look good. I guess You might agree with me when you look at the picture.
I also had some problems making the flaring part of the thumb for the left hand. Every second time I forgot how to make it. The mittens work even with two same pared parts, but of course it looks a bit stupid and not that well done. Even if the thumbs are finally placed in their right positions, you can see the mistakenly right handed made widening in the beginning of the palm. So now I finally wrote it down so I wouldn't have to scratch my head every time from now on, when I start making another one - As long as I remember where I have that piece of paper. Perhaps I should attach it to my cooking book; that is the most important bunch of paper I have here.