ScrollListener.kt

rvChat.addOnScrollListener(object : RecyclerView.OnScrollListener() {
            override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
                super.onScrolled(recyclerView, dx, dy)
                recyclerView.forEachVisibleHolder { holder: RecyclerView.ViewHolder ->
                    if (holder is OutgoingChatViewHolder) {
                        changeDrawableColor(holder)
                    }
                }
            }
        })