使用数组时图像 - 鼠标交叉/悬停效果问题

I'm working on a small exercise that involves making an interface of six die faces. The goal is to change the color of each die face when I hover over it. The issue I'm having is that I can only change the color of the first die face, not the proceeding. I've been reluctant to come here and ask because I feel my issue is so insignificant but I've been trying to get this to work for the last 4 days and I just can't figure it out. I feel there is something about iteration that I'm just quite not understanding yet.I'm working on a small exercise that involves m