“No T, no shade” is used typically after making a remark that could be construed as negative, but to clarify the statement as intending to be constructive. “All T, all shade” is the opposite. Such as when Alyssa made a comment including “No T, no shade” but Coco retorted back “All T, all shade” meaning Coco thought Alyssa was being shadey and not helpful at all.