Beyond its place in Indian philosophy, Tejas found a second life in the West through the Hermetic Order of the Golden Dawn, which in the late nineteenth century adapted the five tattvas into a set of coloured meditation cards used for scrying and visualisation, a practice distinct from, and not a continuation of, the tattva's original doctrinal role in Tantra and Yoga. In that adaptation Tejas is represented by a red equilateral triangle, its colour and sharp form chosen to evoke fire's heat and upward, consuming movement.
The Golden Dawn method has the practitioner gaze steadily at the painted triangle, then close the eyes and hold the afterimage, using it as a gateway into meditative or visionary states associated with the element; later occultists including some in the Thelemic current continued the practice largely unchanged, treating the tattva cards as one tool among several rather than as Indian ritual objects.
This Western use should not be mistaken for the tattva's role in its own tradition, where Tejas is a metaphysical category describing the composition of the manifest world and the physiology of sight and digestion, not primarily an object of visual meditation. The card practice is a genuinely separate, later invention that borrowed the tattva's name, colour associations and elemental logic while building a new method around them.