Replace the old boring flat background with whatever picture you like
当前为 2024-06-16 提交的版本，查看 最新版本。
这些是此脚本变更过代码的版本。 显示所有版本。
Changed everything to replace style instead, will work even faster.
Streamlined the code, it should be simpler now.
Added support for YouTube live chat, the background is now a little transparent
