Easier Access to Color Picker?

I set up 2 panels for my kids to control their RGBW bulbs in their bedrooms. Works great, except that it’s sometimes difficult for toddler fingers to hit the options icon (3 dots) that bring up the color picker. Even I mis-tap on occasion, turning off the light instead of getting to the color picker.

The easiest fix would be just making the 3 dots larger, so it’s easier to press them. I’m brand new to AT, and I can’t find anyway to do this using the tile or theme options available. Even when you adjust the tile size in the panel options, the dots don’t scale with the tile. They seem to always be the same size. Is there a way to do this that I’m just not seeing?

I did find a built-in device type in SmartThings called “Child Color Control”, which only has color, hue, and saturation properties. My idea was to control this virtual device, and then have the actual bulbs mirror it. When I added the device in AT, however, it doesn’t show up on the list of things I can add to my panel. I’m guessing it’s just an unsupported device type.

Are there any other options available to improve this experience? Would love to be able to have a dedicated color picker tile, or have a way of changing the default behavior of the tile from on/off control to just color control. My kids are pretty much never going to turn the lights on and off from the panel.

Thanks!