If you don’t want to buy anything new, I understand — tour tickets are expensive! Thankfully, the colors and vibes of each era are really strong, so all you need to do is pull a monochromatic outfit in the album color of your choice, draw a lucky “13” on your hand, cover your face/hair/body in glitter, and you’re ready. For a quick guide, here are the colors most commonly associated with each era/album:
Taylor Swift: mainly light green, but also white and light blue
Fearless: gold
Speak Now: purple
RED: red
1989: light blue
reputation: black and dark green
Lover: pastel pink, blue and purple (if you’re opting for one, then pink)
folklore: white and grey
evermore: amber, beige, and brown
Midnights: midnight blue

