My old lamp shade was falling apart so I had the idea to give them a new life by covering it with an upcycled bamboo straw yoga mat that I got for free at a garage sale. The stripes aren't painted... they are made with fingernail polish which doesn't bleed under the painter tape like paint!
It is really easy to cover a drum lamp shade with the yoga mat, just wrap it up like a Tootsie Roll. Have the glue gun handy because after you cut the mat, it unravels like the dickens!
But it is easy to make a neat seam where it connects. Add strips of painters tape and open the windows to make stripes of nail polish. Quick-dry polish only takes a minute or two!