Efl Gfx Color Class layer enum
enum Efl.Gfx.Color_Class_Layer { normal: 0, outline, shadow }
typedef enum { EFL_GFX_COLOR_CLASS_LAYER_NORMAL = 0, EFL_GFX_COLOR_CLASS_LAYER_OUTLINE, EFL_GFX_COLOR_CLASS_LAYER_SHADOW } Efl_Gfx_Color_Class_Layer;