Color overlay

Colorize the image with an overlay

To create a color overlay by using colorize=X[,Y], where X is the color of the overlay (hex value or color name) and Y is the opacity (Y=0..1, default 0.5).

colorize=X[,Y] | colourise=X[,Y]

Preview	Syntax
	Original image: /docs/frog.png?w=400
	Color overlay: /docs/frog.png?w=400&colorize=red,0.85
	Desaturate and color overlay: /docs/frog.png?w=400&saturate=-100&colorize=7af,0.6
	Grayscale and color overlay: /docs/frog.png?w=400&gray=1&colorize=7af,0.6