flowchart: How to color a link completely?

[BaumiCoder]

Question

I want to change the color of a link in a flowchart completely, but the arrow head stays in the default color. How can I change the color of the arrow head?

Example

flowchart TD
    A --> B
    linkStyle 0 stroke:red;

flowchart TD
    A --> B
    linkStyle 0 stroke:red;

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