i like to change my colour from milk pasty to brownish, as normally look like a washed out milk bottle, courtesy of the British climate. As to black people wanting to change their skin tone, suggest that it's an insidious means by the film/ music business to cover the bases, appeal to white and black audiences.
Nothing new in this, you should look at what the Temptations, four tops, the Supremes, and any number of black artists, brilliant at their craft, went through to appeal to the white audience. Blame the film/advertising/record/music business they have far too much power over the artists.
Be black and proud use to be the motto once, but seems where money is, you have to change, adapt, not right but there you are