Describe the bug
A clear and concise description of what the bug is.
主题切换为暗色，刷新页面，评论任然为亮色

To Reproduce
Steps to reproduce the behavior:
前置条件：

1. 
2. 
   表现:
3. 打开博客，主题模式切换为暗色模式，然后刷新页面，评论仍为亮色模式
   

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.