A judge has ruled that Stuart Semple infringed on the Yves Klein trademark with Easy Klein, his version of International Klein Blue.

Emmie Brookman, a 28-year-old partner in a home products business, and her fiancé, 34-year-old Norton Johnston, bought the ...

The artist-provocateur reverse-engineered the blue-green shade called ‘olo.’ Now you can buy it as an acrylic paint.

British artist Stuart Semple has created a paint of the 'profoundly saturated' shade - and he's selling it for an outrageous ...