NSAttributedString从HTML深色模式初始化，如何设置默认前景色？

// 导入必要的库
import UIKit

// 从HTML初始化NSAttributedString并设置默认前景色
func createAttributedStringFromHTML(htmlString: String, defaultForegroundColor: UIColor) -> NSAttributedString? {
    guard let data = htmlString.data(using: .utf8) else {
        return nil
    }
    
    let options: [NSAttributedString.DocumentReadingOptionKey: Any] = [
        .documentType: NSAttributedString.DocumentType.html,
        .characterEncoding: String.Encoding.utf8.rawValue
    ]
    
    guard let attributedString = try? NSAttributedString(data: data, options: options, documentAttributes: nil) else {
        return nil
    }
    
    // 设置默认前景色
    let range = NSRange(location: 0, length: attributedString.length)
    let attributes: [NSAttributedString.Key: Any] = [
        .foregroundColor: defaultForegroundColor
    ]
    attributedString.addAttributes(attributes, range: range)
    
    return attributedString
}

// 示例用法
let htmlString = "<p>This is a <b>bold</b> text.</p>"
let defaultForegroundColor = UIColor.black

if let attributedString = createAttributedStringFromHTML(htmlString: htmlString, defaultForegroundColor: defaultForegroundColor) {
    // 使用attributedString进行文本显示
    // ...
}