static public void Init()
{
XSGradientEditor window = EditorWindow.GetWindow <XSGradientEditor>(false, "SCSS Gradient Editor", true);
window.minSize = new Vector2(450, 390);
}
// External
static public void callGradientEditor(Material focusedMat = null)
{
XSGradientEditor.focusedMat = focusedMat;
XSGradientEditor.Init();
}