Implemented colors based on the unreal engines blueprints

Examples/Nodify.Calculator/ConnectorViewModel.cs

@@ -59,7 +59,7 @@ namespace Nodify.Calculator
             set => SetProperty(ref _anchor, value);
         }
 
-        private System.Drawing.Color _color = System.Drawing.Color.DodgerBlue;
+        private System.Drawing.Color _color = NodeColors.Default;
         public System.Drawing.Color ConnectorColor
         {
             set
@@ -144,23 +144,23 @@ namespace Nodify.Calculator
         }
 
         /// <summary>
-        /// Returns a color based on the C# data type.
+        /// Returns an Unreal Engine-inspired color based on the C# data type.
         /// </summary>
         public static System.Drawing.Color GetColorForType(string typeName)
         {
             return (typeName ?? "").ToLower() switch
             {
-                "string" => System.Drawing.Color.CornflowerBlue,
+                "string" => NodeColors.String,
-                "int" => System.Drawing.Color.LightGreen,
+                "int" => NodeColors.Integer,
-                "double" => System.Drawing.Color.Orange,
+                "double" => NodeColors.Float,
-                "float" => System.Drawing.Color.Gold,
+                "float" => NodeColors.Float,
-                "bool" => System.Drawing.Color.Tomato,
+                "bool" => NodeColors.Boolean,
-                "decimal" => System.Drawing.Color.MediumOrchid,
+                "decimal" => NodeColors.Decimal,
-                "long" => System.Drawing.Color.YellowGreen,
+                "long" => NodeColors.Long,
-                "datetime" => System.Drawing.Color.DeepSkyBlue,
+                "datetime" => NodeColors.DateTime,
-                "object" => System.Drawing.Color.Silver,
+                "object" => NodeColors.Object,
-                "list<object>" => System.Drawing.Color.Plum,
+                "list<object>" => NodeColors.List,
-                _ => System.Drawing.Color.LightGray,
+                _ => NodeColors.Default,
             };
         }
     }

Examples/Nodify.Calculator/NodeColors.cs

@@ -0,0 +1,70 @@
+using System.Drawing;
+
+namespace Nodify.Calculator
+{
+    /// <summary>
+    /// Centralized color palette inspired by Unreal Engine Blueprint visual scripting.
+    /// All connector and node colors should reference these constants for consistency.
+    /// </summary>
+    public static class NodeColors
+    {
+        // ─── Variable / Data Type Pin Colors (Unreal Engine style) ───
+
+        /// <summary>Boolean (True/False) — Red</summary>
+        public static readonly Color Boolean = Color.FromArgb(255, 200, 50, 50);
+
+        /// <summary>Integer — Light Blue</summary>
+        public static readonly Color Integer = Color.FromArgb(255, 100, 220, 200);
+
+        /// <summary>Float / Double — Bright Green</summary>
+        public static readonly Color Float = Color.FromArgb(255, 120, 255, 100);
+
+        /// <summary>String — Magenta / Pink</summary>
+        public static readonly Color String = Color.FromArgb(255, 255, 50, 150);
+
+        /// <summary>Long / Name — Gold / Yellow-Green</summary>
+        public static readonly Color Long = Color.FromArgb(255, 200, 200, 50);
+
+        /// <summary>Decimal — Orange (like Transform/Struct in UE)</summary>
+        public static readonly Color Decimal = Color.FromArgb(255, 230, 150, 50);
+
+        /// <summary>DateTime — Cyan (like Rotator in UE)</summary>
+        public static readonly Color DateTime = Color.FromArgb(255, 50, 200, 220);
+
+        /// <summary>Object (generic / untyped) — Gray</summary>
+        public static readonly Color Object = Color.FromArgb(255, 160, 160, 160);
+
+        // ─── Connector Shape Colors ───
+
+        /// <summary>Model / Class reference — Purple (like Class references in UE)</summary>
+        public static readonly Color Model = Color.FromArgb(255, 150, 80, 220);
+
+        /// <summary>List / Array — Green (Grid connectors)</summary>
+        public static readonly Color List = Color.FromArgb(255, 50, 220, 130);
+
+        // ─── Execution Flow Colors ───
+
+        /// <summary>Execution / Flow pins (Triangle) — White (like UE exec pins)</summary>
+        public static readonly Color Exec = Color.White;
+
+        /// <summary>Begin / End special flow — Red (like Event nodes in UE)</summary>
+        public static readonly Color Event = Color.FromArgb(255, 200, 30, 30);
+
+        /// <summary>Loop body flow — Teal/Green branch</summary>
+        public static readonly Color LoopFlow = Color.FromArgb(255, 50, 220, 130);
+
+        // ─── Node Connector Defaults ───
+
+        /// <summary>Universal / Copy / Untyped connector — White</summary>
+        public static readonly Color Universal = Color.White;
+
+        /// <summary>Default connector color for unknown types</summary>
+        public static readonly Color Default = Color.FromArgb(255, 180, 180, 180);
+
+        /// <summary>API param input — Teal</summary>
+        public static readonly Color ApiParam = Color.FromArgb(255, 100, 220, 200);
+
+        /// <summary>Generic system connector — Cyan</summary>
+        public static readonly Color SystemGeneric = Color.FromArgb(255, 100, 220, 200);
+    }
+}

Examples/Nodify.Calculator/NodeHandlers/BasicSystemHandlers.cs

@@ -24,9 +24,9 @@ namespace Nodify.Calculator.NodeHandlers
                 SystemOperationType = info.sysOp
             };
             if (info.sysOp == SystemOperations.BEGIN)
-                op.Output.Add(new ConnectorViewModel { Title = "", IsInput = false, Shape = ConnectorShape.Triangle, ConnectorColor = Color.DarkRed });
+                op.Output.Add(new ConnectorViewModel { Title = "", IsInput = false, Shape = ConnectorShape.Triangle, ConnectorColor = NodeColors.Event });
             else
-                op.Input.Add(new ConnectorViewModel { Title = "", Shape = ConnectorShape.Triangle, ConnectorColor = Color.DarkRed });
+                op.Input.Add(new ConnectorViewModel { Title = "", Shape = ConnectorShape.Triangle, ConnectorColor = NodeColors.Event });
             return op;
         }
 
@@ -65,7 +65,7 @@ namespace Nodify.Calculator.NodeHandlers
                 Title = info.Title ?? "COPY",
                 SystemOperationType = SystemOperations.COPY
             };
-            op.Input.Add(new ConnectorViewModel { Title = "", Shape = ConnectorShape.Circle, ConnectorColor = Color.White, IsCopyConnector = true });
+            op.Input.Add(new ConnectorViewModel { Title = "", Shape = ConnectorShape.Circle, ConnectorColor = NodeColors.Universal, IsCopyConnector = true });
             return op;
         }
 
@@ -118,7 +118,7 @@ namespace Nodify.Calculator.NodeHandlers
                 Title = info.Title ?? "Split",
                 SystemOperationType = SystemOperations.SPLIT
             };
-            op.Input.Add(new ConnectorViewModel { Title = "", Shape = ConnectorShape.Square, ConnectorColor = Color.MediumPurple });
+            op.Input.Add(new ConnectorViewModel { Title = "", Shape = ConnectorShape.Square, ConnectorColor = NodeColors.Model });
             return op;
         }
 

Examples/Nodify.Calculator/NodeHandlers/FlowNodeHandlers.cs

@@ -24,7 +24,7 @@ namespace Nodify.Calculator.NodeHandlers
             };
             op.Input.Add(new ConnectorViewModel { Title = "", Shape = ConnectorShape.Triangle });
             op.Output.Add(new ConnectorViewModel { Title = "", Shape = ConnectorShape.Triangle, IsInput = false });
-            op.Input.Add(new ConnectorViewModel { Title = "Value", ConnectorColor = Color.LimeGreen });
+            op.Input.Add(new ConnectorViewModel { Title = "Value", ConnectorColor = NodeColors.Object });
             return op;
         }
 
@@ -114,7 +114,7 @@ namespace Nodify.Calculator.NodeHandlers
             {
                 Title = "List",
                 Shape = ConnectorShape.Circle,
-                ConnectorColor = Color.White,
+                ConnectorColor = NodeColors.Universal,
                 IsCopyConnector = true,
                 IsTakeListConnector = true
             });

Examples/Nodify.Calculator/NodeHandlers/GetSetHandlers.cs

@@ -126,7 +126,7 @@ namespace Nodify.Calculator.NodeHandlers
                     Title = info.ClassName ?? "",
                     IsInput = false,
                     Shape = ConnectorShape.Square,
-                    ConnectorColor = Color.MediumPurple,
+                    ConnectorColor = NodeColors.Model,
                     DataType = info.ClassName ?? "object"
                 });
             }
@@ -145,7 +145,7 @@ namespace Nodify.Calculator.NodeHandlers
                     var properties = OperationFactory.GetPropertiesFromClassPublic(fileContent);
 
                     // Square input for the class object
-                    op.Input.Add(new ConnectorViewModel { Title = "", Shape = ConnectorShape.Square, ConnectorColor = Color.MediumPurple });
+                    op.Input.Add(new ConnectorViewModel { Title = "", Shape = ConnectorShape.Square, ConnectorColor = NodeColors.Model });
 
                     // Circle output per property, colored by type
                     foreach (var property in properties)
@@ -164,13 +164,13 @@ namespace Nodify.Calculator.NodeHandlers
                 else
                 {
                     // Fallback: generic square I/O
-                    op.Input.Add(new ConnectorViewModel { Title = "", Shape = ConnectorShape.Square, ConnectorColor = Color.MediumPurple });
+                    op.Input.Add(new ConnectorViewModel { Title = "", Shape = ConnectorShape.Square, ConnectorColor = NodeColors.Model });
                     op.Output.Add(new ConnectorViewModel
                     {
                         Title = info.ClassName ?? "",
                         IsInput = false,
                         Shape = ConnectorShape.Square,
-                        ConnectorColor = Color.MediumPurple,
+                        ConnectorColor = NodeColors.Model,
                         DataType = info.ClassName ?? "object"
                     });
                 }

Examples/Nodify.Calculator/NodeHandlers/OtherNodeHandlers.cs

@@ -113,7 +113,7 @@ namespace Nodify.Calculator.NodeHandlers
                         Title = rc,
                         IsInput = false,
                         Shape = ConnectorShape.Grid,
-                        ConnectorColor = Color.MediumSpringGreen,
+                        ConnectorColor = NodeColors.List,
                         DataType = rc
                     });
                 }
@@ -137,7 +137,7 @@ namespace Nodify.Calculator.NodeHandlers
                     Title = "Response",
                     IsInput = false,
                     Shape = ConnectorShape.Circle,
-                    ConnectorColor = Color.LimeGreen,
+                    ConnectorColor = NodeColors.Object,
                     DataType = "object"
                 });
             }
@@ -154,7 +154,7 @@ namespace Nodify.Calculator.NodeHandlers
                     {
                         Title = $"Body ({bc})",
                         Shape = isList ? ConnectorShape.Grid : ConnectorShape.Square,
-                        ConnectorColor = isList ? Color.MediumSpringGreen : Color.MediumPurple,
+                        ConnectorColor = isList ? NodeColors.List : NodeColors.Model,
                         DataType = bc
                     });
                 }
@@ -164,7 +164,7 @@ namespace Nodify.Calculator.NodeHandlers
                     {
                         Title = "Body",
                         Shape = ConnectorShape.Circle,
-                        ConnectorColor = Color.LimeGreen,
+                        ConnectorColor = NodeColors.Object,
                         DataType = "object"
                     });
                 }
@@ -173,7 +173,7 @@ namespace Nodify.Calculator.NodeHandlers
             // Other data inputs (query/path params)
             foreach (var label in info.Input)
             {
-                op.Input.Add(new ConnectorViewModel { Title = label, ConnectorColor = Color.LimeGreen });
+                op.Input.Add(new ConnectorViewModel { Title = label, ConnectorColor = NodeColors.ApiParam });
             }
             return op;
         }