Is it me or are grey squirrels turning red?

This fine fellow was helping himself to scraps from the bird table in my parents-in-laws' garden in Manchester. This is an Eastern Grey Squirrel, a species native to North America, which had displaced the Eurasian Red Squirrel from much of the British Isles over the past century. Larger and more robust than the red, the grey squirrel is considered a pest. This particular one seems to be turning ruddy.