图片背景改为黑色

ImageBox/ImageBox.cs

@@ -144,8 +144,8 @@ namespace Acc.ImageBox
             this.AutoScroll = true;
             this.GridScale = ImageBoxGridScale.Small;
             this.GridDisplayMode = ImageBoxGridDisplayMode.Client;
-            this.GridColor = Color.Gainsboro;
-            this.GridColorAlternate = Color.White;
+            this.GridColor = Color.Black;
+            this.GridColorAlternate = Color.Black;
             this.GridCellSize = 8;
             this.AutoPan = true;
             this.InterpolationMode = InterpolationMode.NearestNeighbor;