"Unfortunately, this doesn't directly help my injury." On the way to the laboratory, Zheng Yichen had Lilith drive while conducting his own power tests through a disguise projection, and a part of the White Light was also within the scope of Order·Right. After the attribute reversal, as Zheng Yichen had thought, it did not become the Black Light he could use.
Instead, it was a chilling light. The color hadn't changed much; the healing aspect had turned into harm, and the offensive aspect had not undergone any change. Overall, the transformation was not as dramatic as that of Black Light, probably because Light type powers themselves are only tangentially related to Order·Right.
There weren't as many parts that could be reversed, since attribute reversal, after all, is not the same as converting offense to defense. Offensive powers remain offensive even after reversal; only their attributes are altered. Therefore, the transformation of Light type's White Light is not significant.