https://www.nytransitmuseumstore.com/collections/holiday-gift-guide/mug-color-changing-gct-stars.html
Grand Central Color Changing Mug
Grand Central Terminal Ceiling color changing 11oz Coffee Mug. Great for collectors, office gift or everyday in your home.
color changing muggrand
https://www.railgoods.com/bart-color-changing-mug.html
BART Color Changing Mug - Railgoods
Variety of BART and Capitol Corridor clothing and gifts. T-shirts, hats, socks, kids items, and more.
color changing mugbart