Apparently I intended to post this during the summer... the pattern is Vivid by Tin Can Knits. Yarn is Briar Rose Fibers Joyful (and it truly is), except the grey (Blue Moon Fiber Arts) and that brilliant purple square in Tosh dk. I couldn't resist using it.
So, yeah. Just one of the reasons I fell off the wagon with knitting a pair of socks each month.