When doing legal research, most lawyers first must figure out what cases are relevant and which precedents judges still enforce. Case-law website Judicata on Wednesday unveiled a new color-coding system to help researchers find which cases to cite and which to avoid. Using machine learning to analyze cases, as well as human editors to check the work, Judicata utilizes a system reminiscent of a law student's highlighted textbook. Background colors indicate the strength of a particular case, its relevance to a user's case, and whether its holding is still good law or has been disputed or even overturned. The color-coding process was quite time consuming.