How to invert colours of an image?

[Odins_son (Vinay)]

Hi,

Is it possible to invert colors of an image to demonstrate a ‘clicked’ action without replacing the image with a completely different pre-inverted image?

By invert I mean, turning white colour in a image into black and black into white.

[Kshitij (Kshitij Vats)]

You can try this. For grayscale effect

[Kshitij (Kshitij Vats)]

For invert you can do this.