I take it that, when referring to "color modifications", that means that M4A1's will leave FN's factory in a Medium Coyote Tan (or whatever) color?
"FY 2021 Base procurement dollars in the amount of $4.824 million supports the purchases of the enhanced performance magazine, the 5.56mm suppressor, components with color modifications, and the conversion of M4 to M4A1 Carbine."
https://www.thefirearmblog.com/blog/...ation-program/