 So you don't understand poly groups, not a problem. If you hold left click and tap alt, you'll be able to change the color of that row. When target is set to over right and you left click on an edge, it will turn every face perpendicular to that edge a new color. And it won't care what the old color was, everything is just gonna be the same new color. But if you change target to additive, it's gonna give every polygon in that loop a new color but also take into consideration the old color. So basically, if you wanna make an entire loop the same color, set it to over right, but if you wanna make everything a new color and kinda keep the distinction between the old colors, set it to additive. Anyway, hope that helps and as always, hope you have a fantastic day and I'll see you around.