alambertton Stack Overflow • Recommends
On “how to change the color of arrows in mermaid.js”
You must use this sentence:
linkStyle default stroke: black
And this will modify all the links on your diagram . If you want to change a specifically link you can use:
linkStyle 0 stroke: blue
When 0 is the number of link on the chart that you want to change, in the order that you has wrote them.
More info in: link to this video