The only mags I have on hand right now are yellow followers.
I just DROS'd my 4006TSW and it has 3 blue follower 11 round mags, actually everything exactly the way I turned it in, when I was issued the M&P. Unfortunately I have been so busy I just stopped into the FFL today and still have to wait 10 days. I'll break them open when I get it, but I remember the magazines were a pain to load to 11.

If memory serves me right we actually switched mags about a year or two into the TSW. The new mags were extremely hard to load to 11 rounds. Some so hard that only a mag loader UPLula would be the only way to get 11 rounds in them.