Black and white should NOT be transparent

[cbk1994]

Originally Posted by Shards-Of-Fate

I've always used green in graphics without green, darkblue in graphics without blue, and yellow whenever at all possible, to annoy those opening my graphics XD

I could see white, sure, But who would use black? :/

We're talking actual black, not index transparency. Using actual black, regardless of the color you're using for transparency (if you're even using index transparency, which is usually a bad idea), is transparent. The same goes for white.