The best way I can explain it is to take a look at the colors of the beams when you have a fresh vehicle (no damage) - notice there is no color. It's all gray, so I had a thought where we can make use of this and use colors (aside from the red, yellow and green that are already used) to indicate what beams belong to each main section (frame, sub frame, shell, suspension, etc). For example, black are frames, sequential black and white is subframe, pink is engine, blue is body, suspension is purple. Sub-parts, like tie rods or control arms of suspension, or the roof or side fender of the body, could be a sequential White-to-X, X being the color (like I used for the sub frame example). This helps us label more parts without using/running out of more colors. Once any beam engages its initial damage, the green-yellow-red system will go on as it does, replacing the beams color label with its current damage state.
