Hopefully, you have enough self-awareness to zero in on these areas, but if you are having trouble, find someone who you really trust and have them go over the list of common weaknesses for your color(s) with you. If they have lived with you or worked with you, and are honest with you, chances are good they will be able to show you some areas where you could grow.
Often our weaknesses are a result of strengths that are carried to the extreme and then become weaknesses. For example, in Yellows being able to talk easily and tell stories can turn into dominating conversations and not paying attention to other people. The Red’s natural leadership abilities when not kept in check can become bossy, argumentative and confrontational. Blues are known for their attention to detail, but perfectionism taken too far can mean being hard to please and critical of others and their efforts. The cool, calm, collected nature of the Green personality can lead to indecisiveness and/or laziness if it goes too far.