The blue robe is the pagan classic for the Queen of Heaven. The blue represented FERTILITY.
https://ancientegyptonline.co.uk/colourblue/
Silver is beaten into plates;
It is brought from Tarshish,
And gold from Uphaz,
The work of the craftsman And of the hands of the metalsmith;
Blue and purple are their clothing;
They are all the work of skillful men. Jer. 10