Colourblind friendly CAPTCHA

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Hi there,
I'm red-green colourblind and I have quite a bit of difficulty with the CAPTCHA system used in the forums, I have to refresh the captcha image quite a bit before I get one I think I can manage with, and then (of course) I end up screwing up anyway =P. It makes searching the forums a bit frustrating.

I was just wondering if a more colourblind-friendly captcha could be implemented? I would never go so far as to call it a disability, but it's a problem that's often overlooked on the web (and everywhere else, kind of).

Thanks!

[Jonas_Eriksson_Swe]

I might be totally wrong here, but if you are logged in when you do a search I don't think there are any CAPTCHA...

Regards,
- JOnas

[Clone]

Ah! I just registered today after a few weeks of lurking, and I haven't done a search since. That's a relief! Thanks