Overload DataGridView CellStyle And Give Default Value

I'm writing a custom DataGridView object for a large project to hand out to a bunch of developers to make our app sections look consistent. I want to set defaults for many of the properties of the DataGridView, and I can set many of them like this:

<System.ComponentModel.Browsable(True), System.ComponentModel.DefaultValue(DataGridViewAutoSizeColumnsMode.Fill)>_
Public Overloads Property AutoSizeColumnsMode() As DataGridViewAutoSizeColumnMode
Get
Return MyBase.AutoSizeColumnsMode
End Get
Set(ByVal value As DataGridViewAutoSizeColumnMode)
MyBase.AutoSizeColumnsMode = value
End Set
End Property

These properties overload with their defaults just fine. Its when I started trying to make default Cell styles that I ran into the issue. Since the DataGridViewCellStyle is a class, I cannot make a constant out of it. I've tried changing all of the settings to what I want them to be in the class constructor, and that works great, except that changes made in the designer properties just get set back as soon as the app runs. So putting the changes in the constructor won't do. Is there anywhere else I can put code that only runs when the control is first dropped on the designer? or any other way of setting a default?