diff --git a/mapping.go b/mapping.go
index 8151542..a01b45f 100644
--- a/mapping.go
+++ b/mapping.go
@@ -71,8 +71,8 @@ func (s *StencilTranslator) load() {
 	}
 	// Hard-coded additions for shapes absent from properties.
 	for k, v := range map[string]string{
-		"gshape.aws_v3.database.Amazon_RDS_PostgreSQL_instance_light_bg":   "mxgraph.aws4.rds_postgresql_instance;fillColor=#3334B9",
-		"gstencil.aws_v3.database.Amazon_RDS_PostgreSQL_instance_light_bg": "mxgraph.aws4.rds_postgresql_instance;fillColor=#3334B9",
+		"gshape.aws_v3.database.Amazon_RDS_PostgreSQL_instance_light_bg":   "mxgraph.aws4.rds_postgresql_instance;fillColor=#3334B9;shadow=0;strokeWidth=2;strokeColor=#333333;opacity=100;html=1;nl2Br=0;verticalLabelPosition=bottom;verticalAlign=top;align=center;spacingLeft=2;spacingRight=0;",
+		"gstencil.aws_v3.database.Amazon_RDS_PostgreSQL_instance_light_bg": "mxgraph.aws4.rds_postgresql_instance;fillColor=#3334B9;shadow=0;strokeWidth=2;strokeColor=#333333;opacity=100;html=1;nl2Br=0;verticalLabelPosition=bottom;verticalAlign=top;align=center;spacingLeft=2;spacingRight=0;",
 	} {
 		if _, ok := s.translations[k]; !ok {
 			s.translations[k] = v