Changing the color of CAPTCHA box's border.

[Broosk Hamarash]

Hi.

I tried to register before the last successful attempt of registration, but I failed because when I faced the step of writing the CAPTCHA code, I couldn't find the box where the code should be written in. That's simply because the box's border is very light and when your screen's brightness is in high level you will not be able to differentiate easily between the box's border (which tends to be white) and the background (which is white).

So I suggest to change it's color in CSS to black.