What’s an easy way to change the color of an upholstered chair?

Put a chair cover over it, paint it or reupholster it. If you've never reupholstered, a slipper chair is the perfect piece to start with. No arms and very straight lines. Take the old cover off and use it for the pattern.

My friend used a colorful afghan she had and "threw" it over the chair "kitty-corner" for more coverage. [One point over the back, over the seat cushion and pointing to the floor and each of the remaining two points over the arms and also pointing at the floor.]

People are painting upholstery now.

You could probably find a slipcover to cover it if it's a fairly simple shape. Or make your own cover. Definitely easier than reupholtering.

https://www.pinterest.com/search/pins/?rs=ac&len=2&q=paint%20upholstered%20furniture%20diy&eq=paint%20upholstered%20furniture&etslf=13602&term_meta[]=paint%7Cautocomplete%7Cundefined&term_meta[]=upholstered%7Cautocomplete%7Cundefined&term_meta[]=furniture%7Cautocomplete%7Cundefined&term_meta[]=diy%7Cautocomplete%7Cundefined

Tuck in a pretty thro, covering the top and bottom.