First of all, that link of yours does not lead anywhere.
Secondly, you are only making yourself look increasingly foolish. Anyone who knows the slightest bit of physics knows that white is the combination of all light in the colour spectrum. I will point you again to my points about prisms and rainbows. And did you ever note that when there isn't any light things go BLACK!?
Only in a pigment sense can white be considered to be colourless.
Go look up white in a dictionary genius. It means free of color, which means no color.
Main Entry: 1white
Pronunciation: 'hwIt, 'wIt
Function: adjective
Inflected Form(s): whit·er; whit·est
Etymology: Middle English, from Old English hwIt; akin to Old High German hwIz white and probably to Old Church Slavonic svetu light, Sanskrit sveta white, bright
Date: before 12th century
1 a : free from color
Ok, pay attention, Helmet...
My physics classes were EXTREMELY good, unlike yours, apparently
I already told you that white is considered colourless ONLY with regards to pigment.
With light, it is ALL colours of the spectrum.
Now, as you seem to have sadly not been taught this very basic piece of information, here are some webistes that explain the point, from many different angles, and quite clearly, so you won;t lose track.
http://www.spacecast.com/flow/spaceGrrrlFAQ/content/Blue_sky.asp
http://www.clubmac.ie/members/michael.barry/
http://www.stld.org.uk/Colour_Mixing.htm
http://www.adscape.com/eyedesign/photoshop/three/colours.html
http://van.hep.uiuc.edu/van/qa/section/Light_and_Sound/Properties_of_Light/948005663.htm
I think you will find the last link, aimed at a 12 year old, will make it the most clear for you.