Bests & Worsts Reviews from Amazon

Most of the pens worked right out of the box. Most of the colors are vibrant, roll on easily and fill an area nicely. Some colors look identical until the ink dries on the page - then the subtle differences are visible to my eye. Only 3 of the 80 don't work very well: 1-3 (orange-yellow glitter), 1-14 (white glitter), 3-4 (pink milky?) (see attached photos for reference). The pens aren't labeled in any way, so I assigned a pen number to each one, and made a chart for each tray showing the color and pen number. For example, the left-most pen in the top tray is labeled "1-1" (tray 1, pen 1), the fourth pen from the left in the third tray is labeled "3-4", etc. I've attached photos of my labeling scheme, mostly so the company can take note of which pens didn't work well, in case it's an issue with that particular ink or that particular production line. I haven't colored anything fun yet, but I am looking forward to pulling out my mandala coloring book and getting started!