i need to make a theme form, chossing two colors, and make them in all of the project forms using this code maybe:

Sub RepaintForm()
grbrush = New System.Drawing.Drawing2D.LinearGradientBrush(New Point(0, 0), _
New Point(Me.Width, Me.Height), x, y)
Me.CreateGraphics.FillRectangle(grbrush, New Rectangle(0, 0, _
Me.Width, Me.Height))
End Sub
Private Sub frmThemes_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
RepaintForm()
End Sub