Creating interactive pattern with Konva

Question

I got the following canvas. Pixels should be clickable, with changeable color. I need to implement this canvas using vue-konva library, because I want to add zoom (scaling) and other features. The problem is that I can't define each pixel as a separate shape, because my canvas can be bigger than 100x100 pixels and I'm afraid this can be harmful for performance. I didn't find any tutorials for building a pattern with konva in Internet. Don't you know how to implement this canvas?