dev/tools/gen_defaults/data/state.json

{
  "version": "v4_1_0",

  "md.sys.state.dragged.state-layer-opacity": 0.16,
  "md.sys.state.focus.state-layer-opacity": 0.1,
  "md.sys.state.hover.state-layer-opacity": 0.08,
  "md.sys.state.pressed.state-layer-opacity": 0.1
}