Recolor an opaque canvas in place using composite operations,
preserving the alpha mask of the source image. Wraps the body in save/restore
so fillStyle / globalCompositeOperation writes don't leak to the caller's context.
https://stackoverflow.com/a/45201094
Recolor an opaque canvas in place using composite operations, preserving the alpha mask of the source image. Wraps the body in
save/restoresofillStyle/globalCompositeOperationwrites don't leak to the caller's context. https://stackoverflow.com/a/45201094