qt creator在编辑的时候，右侧滚动条为白色，不明显

qt creator在编辑的时候，主题背景为白色，右侧滚动条为白色，不明显，使用起来不方便，没有设置滚动条的颜色选项。

Google Translator:

When editing in Qt Creator, the theme background is white and the scroll bar on the right is white, which is not obvious and inconvenient to use. There is no color option for the scroll bar.