“Also, many film lovers and Hollywood directors and cinematographers hated Turner, and considered him a philistine, because he colorized old black & white films.”
Yes, it is true he colorized some movies — I don’t recall that the colorizations went over too well.
As a businessman it was smart as the color versions could be copyrighted and receive residual fees.
Could they? I remember some controversy at the time as to whether colorization was enough of a change to merit copyright protection. I don't know how the courts or copyright office finally ruled on it.