def on_mount(self) -> None:
        self.query_one(Tabs).add_tab(Text.from_markup("[special_red]Special Red Again"))

from rich.text import Text
from rich.theme import Theme as RichTheme
from textual.app import App, ComposeResult
from textual.widgets import Tabs

NAMES = [
    "[special_red]Special Red",
    "[red]Red",
    "[yellow]Yellow",
    ":skull: Skull",
]


class MREApp(App):

    def __init__(self):
        super().__init__()

        theme = RichTheme(
            {
                "special_red": "#ff5e5e",
            }
        )
        self.console.push_theme(theme)

    def compose(self) -> ComposeResult:
        yield Tabs(*NAMES)


if __name__ == "__main__":
    app = MREApp()
    app.run()