折叠条形图 怎么对特定的值进行颜色的区分 #3561

• I have searched the issues of this repository and believe that this is not a duplicate.

What problem does this feature solve?

当值为负数的时候进行特别的颜色区分

What does the proposed API look like?

color 能对每一项进行一个颜色区分

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