$value) { $colorSetIndex = floor($index / $shadeCount) % $colorSetCount; // Reset color set after each set $shadeIndex = $index % $shadeCount; // Cycle through shades within the set // Get the background color for the current tile $bgColor = $colorShades[$colorSetIndex][$shadeIndex]; ?> $value) { $colorSetIndex = floor($index / $shadeCount) % $colorSetCount; // Reset color set after each set $shadeIndex = $index % $shadeCount; // Cycle through shades within the set // Get the background color for the current tile $bgColor = $colorShades[$colorSetIndex][$shadeIndex]; ?>