a change in (one's) stripes(redirected from a change in his stripes)
a change in (one's) stripes
A radical, fundamental shift in one's opinion, ideology, or allegiance, especially in relation to politics. Derived from the phrase "a tiger cannot change its stripes," meaning that people are incapable of changing their essential nature. The former president has shown a change in stripes regarding social welfare since leaving office.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.