I ordered blue and green threads. The blue is pretty, very saturated tone, a little darker than on the seller’s photo. The thread is flat. I don’t think it will be the best option for book binding, but we will see... It is a good quality thread.
The green thread differs a lot from the seller’s picture. I was hoping to receive grass green, but instead got a very dark teal green. I am not happy about this, the seller should update product pictures, because it is nowhere near the green on the product photo.