My local council accepts white plastic for recycling. If white is ok, why do we produce meat packaging, frozen meal packaging etc in black?
One reason for using black plastic for meat packaging is the hide the blood that can sometimes seep out of the meat. It gives the appearance of a cleaner presentation. I've seen meat packaged in white & black plastic trays and the black ones always look neater & give the appearance of being cleaner.
The choice of a color for a plastic item, such as packaging, may be more of a marketing decision than an environmental one. Not everyone is concerned with sustainability & the environment, some people are more concerned about making money & improving only their quality of life irrespective of the impact that may have on others or the environment.