Mercury Green, Croyden Cream and Swamp Holly Orange. Orange and brown. Red, white and blue. For 75 years, these colors and others have traversed ‘L’ structures, subways and grade-level tracks across the city with three letters on their sides: CTA.https://t.co/Ld02H99363 pic.twitter.com/BPUWcUBQsg

— cta (@cta) June 29, 2022