File: tint.py

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textual 2.1.2-1.1
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from textual.app import App
from textual.color import Color
from textual.widgets import Label


class TintApp(App):
    CSS_PATH = "tint.tcss"

    def compose(self):
        color = Color.parse("green")
        for tint_alpha in range(0, 101, 10):
            widget = Label(f"tint: green {tint_alpha}%;")
            widget.styles.tint = color.with_alpha(tint_alpha / 100)  # (1)!
            yield widget


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