There is Such stupid herringion theory, which saying, that blue oposit colour is yelow and red oposit colour is green. This is apogay of stupidity.
Here I puting your maximal red green blue and oposit colourse, where two colourse are swiched on like oposit for red is blue with green, for green opist is blue and red, and for blue oposit is green and red.
So according to this stupid theory red is oposit to green and blue is oposit to red, while I saying, that for blue is oposit green with red, for red is oposit green with blue, and for green is oposit red and blue.
http://img139.imageshack.us/img139/5273/rgbkl5.png
http://img211.imageshack.us/img211/1939/rgbinverseod3.png

My theory you can yourself check for prove by looking at say green and you will see not red, but mix of blue and red like in second link. Enjoy.

The problem of such missleading theory may be bad device of generation red blue and green, when monitors wasn't exist...