How can I color an image?

You can use the colorize effect for coloring your images. It uses the color specified by the color transformation parameter (or co for URLs) that accepts a color name or an RGB value.

For example, here's an image:
http://res.cloudinary.com/demo/image/upload/smartphone.png

Coloring the object using a color name:
http://res.cloudinary.com/demo/image/upload/e_colorize,co_pink/smartphone.png

 Coloring the object using a specific RGB color:
http://res.cloudinary.com/demo/image/upload/e_colorize,co_rgb:dd14d1/smartphone.png

You can control the coloring strength with a value between 0 to 100 (default is 100). For example, strength level of 30:
http://res.cloudinary.com/demo/image/upload/e_colorize:30,co_rgb:dd14d1/smartphone.png

You can apply the colorize effect on text overlays too. For more information:
https://support.cloudinary.com/hc/en-us/articles/202521322-Can-I-dynamically-change-my-text-color-