mines were actually black and white. but it was an additional informaiton package i had sent so i really didnt care much. the inital application was in colour.
i did have second thoughts on the black and white photos but i thought the fact that he is white and i am brown would then not be the most striking thing in the photos if they were black and white. the IO would look at it more than beyond colour as i know there have been cases in other embassies like jamaican embassy where there have been racism and i know of one case at my embassy (coworker's son was black, wife white and they had lots of drama to the point they had to contact an mp).