Answer:
Public Class Form1
Private Sub RedToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles RedToolStripMenuItem.Click
Me.BackColor = Color.Red
End Sub
Private Sub GreenToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles GreenToolStripMenuItem.Click
Me.BackColor = Color.Green
End Sub
Private Sub BlueToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles BlueToolStripMenuItem.Click
Me.BackColor = Color.Blue
End Sub
Private Sub MaximizeToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles MaximizeToolStripMenuItem.Click
Me.WindowState = FormWindowState.Maximized
End Sub
Private Sub MiniMToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles MiniMToolStripMenuItem.Click
Me.WindowState = FormWindowState.Minimized
End Sub
Private Sub RestoreToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles RestoreToolStripMenuItem.Click
Me.WindowState = FormWindowState.Normal
End Sub
End Class