MainActivity.kt

@Composable
fun ProfilePictureComposable(onlineStatus: MutableState<Boolean>,
                             pictureDrawableId: Int) {
    Card(         ...
            border = BorderStroke(
                    2.dp,
                    color = if (onlineStatus.value)
                        Helper.getGreenColor()
                    else
                        Helper.getRedColor()
            ),    ...
    ) { ... }
}