People use them in different ways. Just because I have a guy on the highest rated color dot, does not mean I'm going all in on him. You have to consider who you have a realistic shot at, remember what division they are, monitor potential surprises that don't get attention. I use the colors to remember potential talent, but I might have a board of 50 guys to begin. Let's say I blue dot 15 guys, because they are all equally good, but I have specific needs. If I use the colors based on targets, and I lose out on my targets, I now have to go back and review my backup option to make sure which ones fit the role I need. This is why the notes are used. If I have 2 backup guards, but I expect one to be an elite pg, I want to make that note.