Merge pull request #236 from UnityTech/fix_color_filter

Fix color filter.

Author: kgdev

Runtime/painting/decoration_image.cs

@@ -252,6 +252,8 @@ public static void paintImage(
             Paint paint = new Paint();
             if (colorFilter != null) {
                 paint.colorFilter = colorFilter;
+                paint.color = colorFilter.color;
+                paint.blendMode = colorFilter.blendMode;
             }
 
             if (sourceSize != destinationSize) {

Runtime/rendering/image.cs

@@ -33,6 +33,7 @@ public RenderImage(
             this._alignment = alignment ?? Alignment.center;
             this._invertColors = invertColors;
             this._filterMode = filterMode;
+            this._updateColorFilter();
         }
 
         Image _image;
@@ -115,6 +116,7 @@ public Color color {
                 }
 
                 this._color = value;
+                this._updateColorFilter();
                 this.markNeedsPaint();
             }
         }
@@ -129,6 +131,7 @@ public BlendMode colorBlendMode {
                 }
 
                 this._colorBlendMode = value;
+                this._updateColorFilter();
                 this.markNeedsPaint();
             }
         }