Per Key Solid color always applies to all layers

[DW8Reaper]

If I setup "Per Key Solid" color on a layer and set custom colors, when I go to another layer and choose "Per Key Solid" and set new colors those colors will apply to all layers that are set to "Per Key Solid" as the Layer Color Pattern.

For example, on layer one I start out on "Per Layer Solid Color":

Then I go to layer 2 and setup some custom colors on keys that I mapped to new functions:

Now if I go back to layer 1 and switch it to also use "Per Key Solid" it will firstly get all the colors from layer 2 and any new colors I set there will become the new "Per Key Solid" colors for every layer.

This is inconsistent with how other layer color settings work and also with the UX layout in general which shows the "Per Key Solid" color as a child setting of the selected layer.

I exported the keyboard layout and seems like the layout details would never support this since the per key colors node is a root node and doesn't exist inside each layer: