Слетают стили, если их определять в момент объявления(Unity)

Слетают стили, если их определять в момент объявления. Должно быть: Но слетает:

    public class DataObject : GUIDraggableObject
        // This class just has the capability of being dragged in GUI - it could be any type of generic data class
        {
          ...
            static internal GUIStyleState styleStateHeadlineblack = new GUIStyleState()
            {
                textColor = Color.white,
                background = LofP.MakeTex(Screen.width, 100, Color.black)
            };
            static internal GUIStyle styleHeadlineblack = new GUIStyle()
            {
                normal = styleStateHeadlineblack,
                fixedHeight = 20
            };

            static internal GUIStyleState styleStateHeadlinegray = new GUIStyleState()
            {
                textColor = Color.white,
                background = LofP.MakeTex(Screen.width, 100, Color.gray)
            };
            static internal GUIStyle styleHeadlinegray = new GUIStyle()
            {
                normal = styleStateHeadlinegray,
                fixedHeight = 17
            };

            internal GUIStyle style = new GUIStyle()
            {
                padding = new RectOffset(20, 0, 0, 0)
            };
        ...
            public int m_OrderValue;
            public void OnGUI()
            {
              ...
              m_OrderValue = EditorGUILayout.IntField("Порядок:", m_OrderValue, styleHeadlineblack);
              ...
            }
        }
...
#if UNITY_EDITOR
public class LofP {
    public static Texture2D MakeTex(int width, int height, Color col)
    {
        Color[] pix = new Color[width * height];

        for (int i = 0; i < pix.Length; i++)
            pix[i] = col;

        if(width == 0) {
            width = Screen.width;
        }
        if(height == 0) {
            height = Screen.height;
        }
        Texture2D result = new Texture2D(width, height);
        result.SetPixels(pix);
        result.Apply();

        return result;
    }
...
}
#endif

В чём может быть проблема?