The word is not in the form of smooth throughout, with the following code:
private void Form1_Load(object sender, EventArgs e)
            label1.ForeColor =  Color.Violet;
            label1.Text = "From trong suốt";
            label2.ForeColor = Color.BlueViolet;
            label1.Text = "Mu chữ của form";
            label3.ForeColor = Color.DarkOrange;
            label1.Text = "Mu chữ của form";
            this.TransparencyKey = Color.Wheat;
            this.BackColor = Color.Wheat;
why not borrow the word transparent form? way to overcome this is not the case? image link: