IMO, having all the currency denominations the same size and the same color (I'm looking at YOU, USA) leads to risk and confusion. He in Denmark, I would NEVER confuse a 50 DKK note with a 500 DKK note.
Mac - VBI Operative Proud Member of the Friends of Trick Dempsey Association
The few, the proud, the DEFIANT!
put 50$'s and 100$'s are made of plastic now, clear bits on them too, and braille, pretty hard to mix them up now...and they're different colours.