The Tantrasara describes her iconography: Bagalamukhi sits inside a golden throne in the midst of the ocean in an altar. Her complexion is yellow (golden). Clad in yellow outfits, she is adorned by a garland of yellow bouquets and decked with yellow (golden) ornaments. Yet another etymology suggests that valga usually means “to paralyze” https://youtube.com/shorts/BGUN9lAbS14