

You might know this already, but you can recolor added/replaced attachments on Weapon Packages by applying a Camo.
This way, you can have unified colors for your attachments instead of having them be the default black or desert tan.
Do keep in mind though that some Camos will apply the pattern itself instead of using a solid color. Some Camos also have the same attachment colors. And some Camos will apply a different attachment color than you might expect.
If you want your attachments to be white, then look in the Snow Camo section, Forest has green, Desert has tan and yellow, etc.