Ultraviolet

This is probably the single most pointless filter I've ever written. Not only that, but I have no idea how it works! It uses a very simple algorithm, which I stumbled across when 'doodling', but I can't see for the life of me why it gives the result it gives. In essence, it turns the image to a grayscale tinted with pink and blue and various shades of lilac between. In other words, the image comes out more or less matching the colour scheme of this site!

	Take one perfectly normal, brown horse standing in a green field. Apply the ultraviolet filter, and...
	Look what you get! Now, that's what they call a horse of a different colour in bluegrass country... If anyone can find a use for this filter, I'd love to hear about it.