标签云能否禁用背景图片

[zdRan]

I certify that I have first consulted (check all with "x")

我确认我已经查看了 (使用 "x" 选择)

• [x] Hexo documentation | Hexo 文档
• [x] Material theme documentation | Material 主题文档
• [x] Material theme issues | Material 主题的其它 issue

---

I'm submitting a (check one with "x")

我正在申请 (使用 "x" 选择)

• [ ] bug report | 反馈一个 bug
• [ ] feature request | 申请添加新的特性或功能
• [x] support request | 请求技术支持

标签云能否禁用背景图片，由于标签云的字体是灰色的，添加上背景后，导致标签看不清楚

[cubesky]

Background can not disable now.