document.addEventListener('DOMContentLoaded', function() { const tables = document.querySelectorAll('table'); tables.forEach(table => { const elements = table.querySelectorAll('*'); elements.forEach(element => { const bgcolor = element.getAttribute('bgcolor'); if (bgcolor) { // Convert bgcolor to RGB const r = parseInt(bgcolor.slice(1,3), 16); const g = parseInt(bgcolor.slice(3,5), 16); const b = parseInt(bgcolor.slice(5,7), 16); // Calculate luminance const luminance = (0.299 * r + 0.587 * g + 0.114 * b) / 255; // Find all spans within this element const spans = element.querySelectorAll('span'); spans.forEach(span => { // Set text color based on background luminance span.style.color = luminance > 0.5 ? '#000000' : '#FFFFFF'; }); } }); }); });

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taper threads

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