This photochromic pen blank changes color from a faint white/green to bright blue and purple when exposed to sunlight.
This photochromic pen blank changes color from a faint white/green to bright blue and purple when exposed to sunlight.
please disregard my previous rating of this product. I was under the assumption that the blank was supposed to change with heat or cold. I does change beautifully in sunlight. Very likely to order again
