DesignSystemOption3.kt

// somwhere in the theming code
data class MyTypography(
    val bigText: TextStyle = TextStyle(
        fontFamily = FontFamily.Monospace,
        fontSize = 16.sp,
        fontWeight = FontWeight.Bold
    ),
    val smallText: TextStyle = TextStyle(
        fontFamily = FontFamily.Monospace,
        fontSize = 16.sp,
        fontWeight = FontWeight.Bold
    )
)

val LocalSimpleTypography = staticCompositionLocalOf { MyTypography() }

object CustomTheme {
    val dimensions
        @Composable
        @ReadOnlyComposable
        get() = LocalDimensions.current

    val typography
        @Composable
        @ReadOnlyComposable
        get() = LocalSimpleTypography.current
}

// somewhere at the top level of your UI hierarchy
CompositionLocalProvider(
        LocalDimensions provides Dimensions(),
        LocalSimpleTypography provides MyTypography()
    ) {
        MaterialTheme(
            colors = colors,
            shapes = Shapes,
            content = content
        )
    }

// somewhere in the layouts
Text(
    text = "Hello",
    style = CustomTheme.typography.bigText
)