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11.10. Default Backstage theme

You can use the default Backstage theme configurations to make your Developer Hub instance look like a standard Backstage instance. You can also modify the app-config.yaml file to customize or disable particular parameters.

11.10.1. Default Backstage theme color palette
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The app-config.yaml file uses the following configurations for the default Backstage color palette: 

app:
  branding:
    theme:
      light:
        variant: "backstage"
        mode: "light"
        palette:
          background:
            default: "#F8F8F8"
            paper: "#FFFFFF"
          banner:
            closeButtonColor: "#FFFFFF"
            error: "#E22134"
            info: "#2E77D0"
            link: "#000000"
            text: "#FFFFFF"
            warning: "#FF9800"
          border: "#E6E6E6"
          bursts:
            backgroundColor:
              default: "#7C3699"
            fontColor: "#FEFEFE"
            gradient:
              linear: "linear-gradient(-137deg, #4BB8A5 0%, #187656 100%)"
            slackChannelText: "#ddd"
          errorBackground: "#FFEBEE"
          errorText: "#CA001B"
          gold: "#FFD600"
          highlight: "#FFFBCC"
          infoBackground: "#ebf5ff"
          infoText: "#004e8a"
          link: "#0A6EBE"
          linkHover: "#2196F3"
          navigation:
            background: "#171717"
            color: "#b5b5b5"
            indicator: "#9BF0E1"
            navItem:
              hoverBackground: "#404040"
            selectedColor: "#FFF"
            submenu:
              background: "#404040"
          pinSidebarButton:
            background: "#BDBDBD"
            icon: "#181818"
          primary:
            main: "#1F5493"
          status:
            aborted: "#757575"
            error: "#E22134"
            ok: "#1DB954"
            pending: "#FFED51"
            running: "#1F5493"
            warning: "#FF9800"
          tabbar:
            indicator: "#9BF0E1"
          textContrast: "#000000"
          textSubtle: "#6E6E6E"
          textVerySubtle: "#DDD"
          warningBackground: "#F59B23"
          warningText: "#000000"

      dark:
        variant: "backstage"
        mode: "dark"
        palette:
          background:
            default: "#333333"
            paper: "#424242"
          banner:
            closeButtonColor: "#FFFFFF"
            error: "#E22134"
            info: "#2E77D0"
            link: "#000000"
            text: "#FFFFFF"
            warning: "#FF9800"
          border: "#E6E6E6"
          bursts:
            backgroundColor:
              default: "#7C3699"
            fontColor: "#FEFEFE"
            gradient:
              linear: "linear-gradient(-137deg, #4BB8A5 0%, #187656 100%)"
            slackChannelText: "#ddd"
          errorBackground: "#FFEBEE"
          errorText: "#CA001B"
          gold: "#FFD600"
          highlight: "#FFFBCC"
          infoBackground: "#ebf5ff"
          infoText: "#004e8a"
          link: "#9CC9FF"
          linkHover: "#82BAFD"
          mode: "dark"
          navigation:
            background: "#424242"
            color: "#b5b5b5"
            indicator: "#9BF0E1"
            navItem:
              hoverBackground: "#404040"
            selectedColor: "#FFF"
            submenu:
              background: "#404040"
          pinSidebarButton:
            background: "#BDBDBD"
            icon: "#404040"
          primary:
            dark: "#82BAFD"
            main: "#9CC9FF"
          secondary:
            main: "#FF88B2"
          status:
            aborted: "#9E9E9E"
            error: "#F84C55"
            ok: "#71CF88"
            pending: "#FEF071"
            running: "#3488E3"
            warning: "#FFB84D"
          tabbar:
            indicator: "#9BF0E1"
          textContrast: "#FFFFFF"
          textSubtle: "#CCCCCC"
          textVerySubtle: "#727272"
          warningBackground: "#F59B23"
          warningText: "#000000"

Alternatively, you can use the following variant and mode values in the app-config.yaml file to apply the previous default configuration: 

app:
  branding:
    theme:
      light:
        variant: "backstage"
        mode: "light"
      dark:
        variant: "backstage"
        mode: "dark"

11.10.2. Default Backstage page themes
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The default Backstage header color is white in light mode and black in dark mode, as shown in the following app-config.yaml file configuration: 

app:
  branding:
    theme:
      light:
        palette: {}
        defaultPageTheme: default
        pageTheme:
          default:
            backgroundColor: ['#005B4B'] # teal
            fontColor: '#ffffff'
            shape: wave
          documentation:
            backgroundColor: ['#C8077A', '#C2297D'] # pinkSea
            fontColor: '#ffffff'
            shape: wave2
          tool:
            backgroundColor: ['#8912CA', '#3E00EA'] # purpleSky
            fontColor: '#ffffff'
            shape: round
          service:
            backgroundColor: ['#006D8F', '#0049A1'] # marineBlue
            fontColor: '#ffffff'
            shape: wave
          website:
            backgroundColor: ['#0027AF', '#270094'] # veryBlue
            fontColor: '#ffffff'
            shape: wave
          library:
            backgroundColor: ['#98002B', '#8D1134'] # rubyRed
            fontColor: '#ffffff'
            shape: wave
          other:
            backgroundColor: ['#171717', '#383838'] # darkGrey
            fontColor: '#ffffff'
            shape: wave
          app:
            backgroundColor: ['#BE2200', '#A41D00'] # toastyOrange
            fontColor: '#ffffff'
            shape: shapes.wave
          apis:
            backgroundColor: ['#005B4B'] # teal
            fontColor: '#ffffff'
            shape: wave2
          card:
            backgroundColor: ['#4BB8A5', '#187656'] # greens
            fontColor: '#ffffff'
            shape: wave

      dark:
        palette: {}
        defaultPageTheme: default
        pageTheme:
          default:
            backgroundColor: ['#005B4B'] # teal
            fontColor: '#ffffff'
            shape: wave
          documentation:
            backgroundColor: ['#C8077A', '#C2297D'] # pinkSea
            fontColor: '#ffffff'
            shape: wave2
          tool:
            backgroundColor: ['#8912CA', '#3E00EA'] # purpleSky
            fontColor: '#ffffff'
            shape: round
          service:
            backgroundColor: ['#006D8F', '#0049A1'] # marineBlue
            fontColor: '#ffffff'
            shape: wave
          website:
            backgroundColor: ['#0027AF', '#270094'] # veryBlue
            fontColor: '#ffffff'
            shape: wave
          library:
            backgroundColor: ['#98002B', '#8D1134'] # rubyRed
            fontColor: '#ffffff'
            shape: wave
          other:
            backgroundColor: ['#171717', '#383838'] # darkGrey
            fontColor: '#ffffff'
            shape: wave
          app:
            backgroundColor: ['#BE2200', '#A41D00'] # toastyOrange
            fontColor: '#ffffff'
            shape: shapes.wave
          apis:
            backgroundColor: ['#005B4B'] # teal
            fontColor: '#ffffff'
            shape: wave2
          card:
            backgroundColor: ['#4BB8A5', '#187656'] # greens
            fontColor: '#ffffff'
            shape: wave
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