Setting region labels and changing color of each set on 6-way triangle Venn Diagrams

[omtarful]

I am trying to replicate the 2nd plot (1st plot was done with ggVennDiagram on R). I was wondering how can I add region labels and give each set (triangle) a different color on the 6-way triangle diagram.

[gaospecial]

Please read the document at https://gaospecial.github.io/ggVennDiagram/articles/using-new-shapes.html and ask hereafter if you still have further questions. In ggVennDiagram, we used different color of set edges to separate them.