[Feature] 希望主题可以修改 legend 分页器页码颜色

[webiamcome]

What problem does this feature solve?

暗色模式主题会导致 legend 分页器页码看不清楚，效果如下图：

What does the proposed API look like?

none

[xiaoluoHe]

1.11.6 版本已修复：#2825
主题新增 3 个图例相关的颜色 token