Well Dubro replied to my email and they offered to ship black couplers, now I am happy and A+ customer service, they stand behind the product they sell.

My problem is a small item and maybe detail for a company, if they change the shipped white ones with the balck ones in future productions then this is good for them and us.

In each plane I use $100+ worth of Dubro products and they are not big planes, and with this will experince I know that they stand behind the product they sell.