[BUGFIX] Fixed Material.DOGradientColor not using color property overload correctly

UnityTests.Unity5/Assets/Demigiant/DOTween/Modules/DOTweenModuleUnityVersion.cs

@@ -55,7 +55,7 @@ namespace DG.Tweening
             for (int i = 0; i < len; ++i) {
                 GradientColorKey c = colors[i];
                 if (i == 0 && c.time <= 0) {
-                    target.color = c.color;
+                    target.SetColor(property, c.color);
                     continue;
                 }
                 float colorDuration = i == len - 1

_DOTween.Assembly/DOTween/DOTween.cs

@@ -32,7 +32,7 @@ namespace DG.Tweening
     public class DOTween
     {
         /// <summary>DOTween's version</summary>
-        public static readonly string Version = "1.2.100"; // Last version before modules: 1.1.755
+        public static readonly string Version = "1.2.105"; // Last version before modules: 1.1.755
 
         ///////////////////////////////////////////////
         // Options ////////////////////////////////////

_DOTween.Assembly/bin/Modules/DOTweenModuleUnityVersion.cs

@@ -55,7 +55,7 @@ namespace DG.Tweening
             for (int i = 0; i < len; ++i) {
                 GradientColorKey c = colors[i];
                 if (i == 0 && c.time <= 0) {
-                    target.color = c.color;
+                    target.SetColor(property, c.color);
                     continue;
                 }
                 float colorDuration = i == len - 1