BETTER SETUP for visually impaired of the BLUE HA NAVIGATION BAR

[Ildar_Gabdullin]

Meanwhile you may add a custom theme:

test_header:

  card-mod-theme: test_header

  card-mod-root-yaml: |
    .: |
      paper-tab:hover {
        color: blue;
        background-color: red;
      }
      paper-tab.iron-selected {
        color: white;
        background-color: lightgreen;
      }

card-mod themes discussed here
where to put card-mod theme code? , also here