if (phpthumb_functions::IsHexColor($bg_color)) {
                    $text_background_alpha = round(127 * ((100 - min(max(0, $bg_opacity), 100)) / 100));
                    $text_color_background = phpthumb_functions::ImageHexColorAllocate($img_watermark, $bg_color, false, $text_background_alpha);
                } else {
                    $text_color_background = phpthumb_functions::ImageHexColorAllocate($img_watermark, 'FFFFFF', false, 127);