After more research, there’s different frames than the one Memory Alpha has for Captain Tersal that confirm that at least the upper part of the uniform is a normal TNG uniform and the highlights were just lightning. The cuffs are different, but that could be personal choice - she is the captain after all.

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Actually kind of disappointing - they could have thrown in the abandoned uniforms for Generations as sort of a nod to the inspiration for the LD uniforms.