I want to take out the random color of the Captcha letter
Iknow it have to do with:

$color = ImageColorAllocate($im, rand(0,0), rand(0,0), rand(0,0));
$rk_color = ImageColorAllocate($im, 128, 128, 128);

and

ImageTTFText($im, $size, $angle, $x + 2, $y + 2, $rk_color, $font, $textstr);
ImageTTFText($im, $size, $angle, $x, $y, $color, $font, $textstr);

in the captcha.php

But what to do to have the text image only one color....