fix: 调整滑动条横条和刻度颜色

[Whale107]

调整滑动条横条和刻度颜色

Log: 调整滑动条横条和刻度颜色 Bug: https://pms.uniontech.com/bug-view-254295.html Influence: 调整滑动条横条和刻度颜色

[deepin-bot[bot]]

Doc Check bot :green_circle: Document Coverage Check Passed!

[deepin-bot[bot]]

TAG Bot

New tag: 5.7.1 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #605

[deepin-bot[bot]]

TAG Bot

New tag: 5.7.2 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #618

[deepin-bot[bot]]

TAG Bot

New tag: 5.7.3 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #619

[deepin-bot[bot]]

TAG Bot

New tag: 5.7.4 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #623

[deepin-bot[bot]]

TAG Bot

New tag: 5.7.5 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #627

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 在DGuiApplicationHelper::adjustColor函数调用中，参数+20可能是一个错误，应该是一个变量或者常量。
• Q_UNUSED(event)宏通常用于避免编译器警告，但在paintEvent函数中，event参数实际上被忽略了，这可能是一个误导。

是否建议立即修改:

• 是

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: 18202781743, Whale107

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