1 files changed, 10 insertions, 2 deletions
diff --git a/server/protocol/src/book.rs b/server/protocol/src/book.rs
index 33b5654e..02dfa425 100644
--- a/server/protocol/src/book.rs
+++ b/server/protocol/src/book.rs
@@ -54,8 +54,16 @@ pub struct DiagramNode {
     #[bincode(with_serde)]
     pub position: Vec2,
     pub label: Message,
-    pub color: Option<String>,
-    pub shape: Option<String>,
+    pub style: NodeStyle,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, Encode, Decode)]
+pub enum NodeStyle {
+    IntermediateProduct,
+    FinalProduct,
+    ProcessActive,
+    ProcessPassive,
+    ProcessInstant,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, Encode, Decode)]