private void SetButtonColor()
{
if (isDefault)
{
// flat appearance
FlatAppearance.BorderColor = Color.DodgerBlue;
FlatAppearance.MouseDownBackColor = Color.SteelBlue;
FlatAppearance.MouseOverBackColor = Color.DodgerBlue;
}
else
{
// flat appearance
FlatAppearance.BorderColor = Color.Gray;
FlatAppearance.MouseDownBackColor = Color.DimGray;
FlatAppearance.MouseOverBackColor = Color.Gray;
}
}