The color of money. No I mean literally, the color of money.

You know how sometimes people use the term "green" to refer to money?  Surely this is only an American thing, because other countries have bills that are different colors, right?  Actually, I bet people from other countries are surprised to find out all denominations of American money are green.  Seriously, ALL of them are green?  (And the same size?)  That's weird. 

Or is it?  Well let's find out.  Here are (what I estimate to be) the top 10 currencies (based on the countries with the largest populations, and the fact that the euro is used in a bunch of countries) and, more importantly, the color(s).

Chinese yuan (aka RMB)
1 USD = 6.37 CNY

Image source.

Indian rupee
1 USD = 55.8 INR

Image source.

Euro
1 USD = 0.80 EUR

Image source.

United States
1 USD = 1 USD, duh.
Since 2004, the newer designs have been less green.  But if you asked any American to draw you a picture of money, they'd totally color it green.  I stand by my previous statement about the unique greenness of American money.

Image source.

Indonesian rupiah
1 USD = 9416 IDR

Image source.

Brazilian real
1 USD = 2.06 BLR

Before 2010.  Image source.

Released in 2010.  Image source.

Pakistani rupee
1 USD = 94.5 PKR

Image source.

Nigerian naira
1 USD = 163 NGN

Image source.

Russian ruble
1 USD = 32.9 RUB
(I'm getting a lot of search results which are images of coins- perhaps Russia likes their coins more than other countries do?)

Image source.

Bangladeshi taka
1 USD = 82 BDT

Image source.

Conclusion:  Money is totally not green.

And here's my disclaimer:  I am very familiar with the US and Chinese money, but know absolutely nothing about all the other ones on my list, so it's totally likely that I misrepresented them.  What if I've included a picture of a bill that's technically in circulation, but no one really uses it, like the US $2 bill?  Or what if there's some subtle thing I missed because I expect other countries to work the same as the US?  Like, I never ever would have expected that paper bills could be used rather than coins for values under a "dollar", until they were handed to me in a bank in Beijing 2 years ago.  (Yes.  A paper bill for 50 "cents" (5 mao) or 10 "cents" (1 mao).  Wild.)

If you have any fun facts about some of the currencies listed here, please do tell.  ^_^

Sources:
Wikipedia pages:
Euro
List of circulating currencies
List of countries by population
United States dollar
Other:
Brazilian Real
Exchange rates
Currency Converter