friiskiwi: I would have thought that there are only 3 colours, Red, Green and Yellow, all other colours are mixtures of those. ( 5 years and 2175 days ago )

meatman: That's primary colors. There are 7 colors in the spectrum. And the example above is wrong because black is not a color. How's that for nit-picking ?? ( 5 years and 2175 days ago )

friiskiwi: And I of course meant to say Red, blue and yellow, it was late. ( 5 years and 2174 days ago )

friiskiwi: I thought the original suggestion included, Black or white are not considered colour.
We have had this problem in previous contests, where sometimes Black was allowed, because White is an absence of colour while Black are all colours added together.
It has been pointed out in the past, that the thumb is only a loose suggestion and should never be taken as a guide.
I would imagine the colours we are looking for are:
Yellow, Red, Magenta, Blue, Cyan, Green, Orange and purple.
I'm not the mod, but I would accept Pink, as a colour, but not Pink and Red, as in that case Pink would be a shade of Red.
I'm not the Mod for this contest, so these are just my ideas, not the official verdict. ( 5 years and 2173 days ago )

MyMindsEye: Perhaps the Mods should rule on this since it does not rule out black or white for that matter and the example uses black.
This is sending a mixed message that CONFUSES %) ( 5 years and 2173 days ago )

meatman: Another enigma wrapped in a mystery and covered with a puzzle !! Or maybe a wish being chased by a dream. just kidding. And I know all about the thumb being wrong some of the time. I was just trying to demonstrate the art of nit-pickery. Something that prevails occasionally here. ( 5 years and 2172 days ago )

Contest Moderator: For this contest we will allow black and white as colors. ( 5 years and 2172 days ago )

friiskiwi: Your choice, but I feel allowing both Black and white, turns this into just an other 'anything goes' contest. ( 5 years and 2171 days ago )

friiskiwi: Here is a fairly good link to check colours in an image
http://www.cssdrive.com/imagepalette/index.php ( 5 years and 2171 days ago )