undefined in r3c2 icon colour

[dougle03]

Generated yaml error.

  r3c2_entity: "input_number.grid_frequency_average"
  r3c2_type: "sensor"
  r3c2_label: "Grid Freq"
  r3c2_icon: "\ue63c"
  r3c2_icon_color: "undefined"
  r3c2_format: '%.0fHz'
  r3c2_color_thresh_high: "100"
  r3c2_color_thresh_mid: "50"
  r3c2_color_thresh_low: "0"
  r3c2_color_high: "0xFF0000"
  r3c2_color_mid: "0xFFA500"
  r3c2_color_low: "0x32CD32"```

[element-software]

Hi @dougle03 i think it's not selected a default icon if you've switched from one entity type to the other, I'll look into this. 🙏

[dougle03]

I think I selected grey colour. But since played with it so can't be sure...