Except Visually... :)
This is the grid when you start, notice that most of the grid is green. Only a single zig zag line is silver
Here you are hovering over one of the Silver ones. Notice how it (and its neighbour) is selected in Red.
The same with the other two near by when you hover over them.
Then When you click, Both Circles Change to the next form, Triangles. Since this matches the Ones on the right, they go green.
Which can be better seen when you move away from them so they are no longer selected.
To me it seems pretty clear, but I've been working on it for a few days, so I'm probably blind to the confusion it can cause. Maybe I should have stuck to Pong ;)
This is the grid when you start, notice that most of the grid is green. Only a single zig zag line is silver
Here you are hovering over one of the Silver ones. Notice how it (and its neighbour) is selected in Red.
The same with the other two near by when you hover over them.
Then When you click, Both Circles Change to the next form, Triangles. Since this matches the Ones on the right, they go green.
Which can be better seen when you move away from them so they are no longer selected.
To me it seems pretty clear, but I've been working on it for a few days, so I'm probably blind to the confusion it can cause. Maybe I should have stuck to Pong ;)