a

core/src/mindustry/logic/LCanvas.java

@@ -59,6 +59,7 @@ public class LCanvas extends Table{
             pane.setScrollPercentY(s);
             pane.updateVisualScroll();
             pane.requestScroll();
+            Core.app.post(() -> pane.requestScroll());
         });
 
         if(toLoad != null){

core/src/mindustry/logic/LStatement.java

@@ -109,6 +109,8 @@ public abstract class LStatement{
         t.pack();
     }
 
+    public void afterRead(){}
+
     public void write(StringBuilder builder){
         LogicIO.write(this,builder);
     }

core/src/mindustry/logic/LStatements.java

@@ -163,6 +163,9 @@ public class LStatements{
                 b.label(() -> type.name());
                 b.clicked(() -> showSelect(b, GraphicsType.all, type, t -> {
                     type = t;
+                    if(type == GraphicsType.color){
+                        p2 = "255";
+                    }
                     rebuild(table);
                 }, 2, cell -> cell.size(100, 50)));
             }, Styles.logict, () -> {}).size(90, 40).color(table.color).left().padLeft(2);
@@ -177,10 +180,16 @@ public class LStatements{
 
                 switch(type){
                     case clear:
+                        fields(s, "r", x, v -> x = v);
+                        fields(s, "g", y, v -> y = v);
+                        fields(s, "b", p1, v -> p1 = v);
+                        break;
                     case color:
                         fields(s, "r", x, v -> x = v);
                         fields(s, "g", y, v -> y = v);
                         fields(s, "b", p1, v -> p1 = v);
+                        row(s);
+                        fields(s, "a", p2, v -> p2 = v);
                         break;
                     case stroke:
                         s.add().width(4);
@@ -223,7 +232,14 @@ public class LStatements{
                         break;
                 }
             }).expand().left();
+        }
 
+        @Override
+        public void afterRead(){
+            //0 constant alpha for colors is not allowed
+            if(type == GraphicsType.color && p2.equals("0")){
+                p2 = "255";
+            }
         }
 
         @Override

core/src/mindustry/world/blocks/logic/LogicDisplay.java

@@ -73,7 +73,7 @@ public class LogicDisplay extends Block{
                             case commandPoly: Fill.poly(x, y, Math.min(p1, maxSides), p2, p3); break;
                             case commandLinePoly: Lines.poly(x, y, Math.min(p1, maxSides), p2, p3); break;
                             case commandTriangle: Fill.tri(x, y, p1, p2, p3, p4); break;
-                            case commandColor: this.color = Color.toFloatBits(x, y, p1, 255); Draw.color(this.color); break;
+                            case commandColor: this.color = Color.toFloatBits(x, y, p1, p2); Draw.color(this.color); break;
                             case commandStroke: this.stroke = x; Lines.stroke(x); break;
                         }
                     }