Ideas for implementing a palette menu

I’d like some input from some of you more seasoned phaser devs. How would you go about creating such a menu? It is basically a palette of different categories, that each have a number of selectable tools. (In the selected example category “drawing” you can select a color, the width of your pen and the erase tool). I’m thinking nested groups. One for level 1 containing each category and Level 1 buttons and each category is a group with its settings within.

Not sure about how I should go about implementing it without writing to much manual logic into it. Are nested groups a performance issue when using it for UI?
I’d love to hear some rough sugestions or even examples if you know any in that direction. The Rex UI plugins offer some funtionality but not quite what I’m lookgin for. :slight_smile:

I think I will just roll with the idea I have in my head then.
Any input is still wellcome. I’ll probably post some updates here if I run into major problems. :slight_smile: