Improve visibility of building placement preview.

mods/ra/rules/structures.yaml

@@ -1073,6 +1073,10 @@ WEAP:
 		ReferencePoint: Top
 		ZOffset: 256
 		RequiresCondition: primary
+	-ActorPreviewPlaceBuildingPreview:
+	SequencePlaceBuildingPreview:
+		Sequence: place
+		SequencePalette: placebuilding
 
 FACT:
 	Inherits: ^Building
@@ -1243,6 +1247,10 @@ PROC:
 		Type: Rectangle
 			TopLeft: -1536, 598
 			BottomRight: -512, 1280
+	-ActorPreviewPlaceBuildingPreview:
+	SequencePlaceBuildingPreview:
+		Sequence: idle
+		SequencePalette: placebuilding
 
 SILO:
 	Inherits: ^Building