The 6th of 12 #colorTrends for 2012. "Day-Glo" (aka "Neon") is really a Fad rather than a Trend. It will come on hot and fast and then burn itself out.
My personal opinion of the rainbow of Day-Glo colors for fashion, gift, and home furnishings design is that it should be avoided. I, however think it is great for it's original design application, which was/is high visibility in day and night.