The first colored coin released in Japan is the 2003 1000yen Aomori coin.

Mintage of the coin is at 50,000 and face value of 1000 yen.

However what I see on the net is horrifying expensive: they are at least 65,000 yen which is around 600+USD! What is even more interesting is that in the JNDA 2007 catalogue, it lists it at 95,000JPY (900USD for a modern silver commemorative coin?!) Does Krause list them at that price?

Here is one auction that just went off at 66,000JPY.

http://page2.auctions.yahoo.co.jp/jp/auction/b72455665

Here is another current listing auction:
http://page8.auctions.yahoo.co.jp/jp/auction/h46726167

But it's still at 600+USD...

i don know y i nvr liked coins with colours on them they feel uncoinly to me.(uncoinly a word i just made up:D).