您可以使用类似于以下内容的内容：

Text(text = "....",
     style = TextStyle(color = MaterialTheme.colors.primary))

Compose提供基于材质颜色规范的ColorPalette来生成应用主题。它提供lightColorPalette和darkColorPalette来分别定义亮模式和暗模式的主题。

val lightThemeColors = lightColorPalette(
    primary = Color(0xFFFFFFFF),
    primaryVariant = Color(0xFFFFFFFF),
    onPrimary = Color.Black,
    secondary = Color.Transparent,
    onSecondary = Color.White,
    background = Color.White,
    onBackground = Color(0xFF212121),
    surface = Color.White,
    onSurface = Color(0xFF212121),
    error = Color.Red,
    onError = Color.White
)
val darkThemeColors = darkColorPalette(
    primary = Color(0xFF000000),
    primaryVariant = Color(0xFF000000),
    onPrimary = Color.White,
    secondary = Color.White,
    onSecondary = Color.White,
    surface = Color(0xFF212121),
    background = Color(0xFF212121),
    onBackground = Color.White,
    onSurface = Color.White,
    error = Color.Red,
    onError = Color.White
)
MaterialTheme(
colors = if(isSystemInDarkTheme()) darkThemeColors else lightThemeColors
) {
    Column {
        Text(
        textStyle = TextStyle(color = MaterialTheme.colors.primary)
        )
    }
}

如果你想添加更多的自定义颜色到你的主题，你可以使用ColorPalette与扩展变量，如下所示

@Composable
val ColorPalette.myColor: Color
    get() = if(!isLight) Color(0xFF424242) else Color.White

现在，您可以使用MaterialTheme.colors.myColor来包含。
如果你想包含来自android colors xml的颜色，你可以使用colorResource(id = R.color.anyName)函数。

您可以尝试以下操作：

inline fun <T> Resources.Theme.getAttribute(
    @AttrRes attr: Int,
    block: (TypedArray) -> T,
): T {
    val a = obtainStyledAttributes(intArrayOf(attr))
    return block(a).also { a.recycle() }
}

fun Resources.Theme.getDrawableAttribute(@AttrRes attr: Int): Drawable =
    getAttribute(attr) { it.getDrawable(0)!! }

fun Resources.Theme.getDimensionAttribute(@AttrRes attr: Int, defaultValue: Float = 0f): Float =
    getAttribute(attr) { it.getDimension(0, defaultValue) }

fun Resources.Theme.getStringAttribute(@AttrRes attr: Int): String? =
    getAttribute(attr) { it.getString(0) }

fun Resources.Theme.getColorAttribute(@AttrRes attr: Int, defaultValue: Int = 0): Int =
    getAttribute(attr) { it.getColor(0, defaultValue) }

@Composable
fun getDimensionAttribute(@AttrRes attr: Int, defaultValue: Float = 0f): Float =
    LocalContext.current.theme.getDimensionAttribute(attr, defaultValue)

@Composable
fun getStringAttribute(@AttrRes attr: Int): String? =
    LocalContext.current.theme.getStringAttribute(attr)

@Composable
fun getColorAttribute(@AttrRes attr: Int, defaultValue: Int = 0): Int =
    LocalContext.current.theme.getColorAttribute(attr, defaultValue)

为了从属性中获取颜色，我使用了这个可组合函数：

@Composable
fun getColor(color: Int): Color {
    return colorResource(LocalContext.current.getColorFromAttrs(color).resourceId)
}

fun Context.getColorFromAttrs(attr: Int): TypedValue {
    return TypedValue().apply {
        theme.resolveAttribute(attr, this, true)
    }
}

用法：

val color: Color = getColor(R.attr.colorText)