Update cube.mtl and cube.obj: added new materials ForegroundColor and Helen_Phone, adjusted vertex positions for Helen_Boots, and refined face definitions for improved visual accuracy.

cube.mtl

@@ -23,6 +23,16 @@ Kd 0.898039 0.898039 0.898039
 Ks 0.330000 0.330000 0.330000
 map_Kd cube/Mirror_02.jpg
 
+newmtl ForegroundColor
+Ka 0.000000 0.000000 0.000000
+Kd 0.000000 0.000000 0.000000
+Ks 0.330000 0.330000 0.330000
+
+newmtl Helen_Phone
+Ka 0.000000 0.000000 0.000000
+Kd 0.247059 0.247059 0.247059
+Ks 0.330000 0.330000 0.330000
+
 newmtl FrontColor
 Ka 0.000000 0.000000 0.000000
 Kd 1.000000 1.000000 1.000000