The top one has seen time "in the wild", which has cause dth colour change. It might have been sitting out in the rain, or in a public fountain or swimming pool, or been stuck in a commercial washing machine for a while. It might even have been buried and dug up again. All of these things coul cause such discolouration.
It's also seen considerable wear on the high points, which to me lends credence to the "washing machine" hypothesis.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis