One of the Key Features of Color Coding in FTM 2019 is the ability to assign up to four different colors to individuals in your family tree, making it easier to track ancestral lines and identify relationships at a glance. This feature allows users to organize their tree visually, distinguishing between maternal and paternal lines or highlighting specific branches for research purposes. Additionally, the color-coding system extends to charts and reports, helping users quickly analyze family connections. By utilizing this tool effectively, genealogists can streamline their research and enhance the clarity of their family history data.