engine.php may calculate "short" Hex numbers for colors (eg "0d88") which buggers some browsers

Firefox-3.0 issues CSS errors for color settings using "#0d88", and then ignoring that particular CSS rule. It turns out that 'function color_light' in 'engine.php' calculates/creates "0d88" from the Winter theme link_color value "0011aa" times a 0.8 factor. Actually, it calculates a "0,17,170" triplet which gets interpreted as "0d88".

Attached is a "diff" file where I added "if($rgb[x] < 16){$rgb="0" . $rgb;}" for each digit to ensure that a 6-character hexadecimal number will result, thus allowing the associated CSS rule to be used.