This is a simple captcha alternative design for my site. The user has to get the colour correct three times to be verified. They are allowed 3 incorrect attempts before lockout. I know it would be possible to write a computer program which could analyze the content of the images to do it but it is for a feature request form - doesn't need to be as secure as a recaptcha.

They have the option to do a normal captcha.

Love the style and the background texture, but isn't this a bit awkward for colorblind people?

Excuse the appalling grammatical mistake.

Please draft me on dribbble.