discourse/app/assets/javascripts/admin/templates/components/themes-list.hbs

<div class="themes-list-header">
  {{d-button
    action=(action "changeView")
    actionParam=THEMES
    class=(concat "themes-tab " "tab " (if themesTabActive 'btn-danger active' ''))
    label="admin.customize.theme.title"
  }}
  {{d-button
    action=(action "changeView")
    actionParam=COMPONENTS
    class=(concat "components-tab " "tab " (if componentsTabActive 'btn-danger active' ''))
    label="admin.customize.theme.components"
    icon="puzzle-piece"
  }}
</div>

<div class="themes-list-container">
  {{#if hasThemes}}
    {{#if hasActiveThemes}}
      {{#each activeThemes as |theme|}}
        {{themes-list-item theme=theme navigateToTheme=(action "navigateToTheme" theme)}}
      {{/each}}

      {{#if hasInactiveThemes}}
        <div class="themes-list-item inactive-indicator">
          <span class="empty">
            {{#if themesTabActive}}
              {{I18n "admin.customize.theme.inactive_themes"}}
            {{else}}
              {{I18n "admin.customize.theme.inactive_components"}}
            {{/if}}
          </span>
        </div>
      {{/if}}
    {{/if}}

    {{#if hasInactiveThemes}}
      {{#each inactiveThemes as |theme|}}
        {{themes-list-item theme=theme navigateToTheme=(action "navigateToTheme" theme)}}
      {{/each}}
    {{/if}}
  {{else}}
    <div class="themes-list-item">
      <span class="empty">{{I18n "admin.customize.theme.empty"}}</span>
    </div>
  {{/if}}


</div>

<div class="create-actions">
  {{d-button action=installModal icon="upload" label="admin.customize.install" class="btn-primary"}}
</div>