fix(color): show color book identity

src/scene/cache/properties.rs

@@ -17,6 +17,18 @@ pub fn general_section(entity: &EntityType) -> PropSection {
             ((alpha as f64 / 255.0 * 100.0).round() as u32).to_string()
         }
     };
+    let color_value = common.color_name.as_deref().map_or_else(
+        || PropValue::ColorChoice(common.color),
+        |identity| PropValue::NamedColorChoice {
+            color: common.color,
+            name: identity
+                .split_once('$')
+                .map(|(_, color_name)| color_name)
+                .filter(|color_name| !color_name.is_empty())
+                .unwrap_or(identity)
+                .to_string(),
+        },
+    );
 
     // Hyperlink is stored in XDATA under the "PE_URL" application.
     let hyperlink = common
@@ -36,7 +48,7 @@ pub fn general_section(entity: &EntityType) -> PropSection {
             Property {
                 label: t!("Color").into_owned(),
                 field: "color",
-                value: PropValue::ColorChoice(common.color),
+                value: color_value,
             },
             Property {
                 label: t!("Layer").into_owned(),

src/scene/model/object.rs

@@ -30,6 +30,8 @@ pub enum PropValue {
     },
     /// ACI/RGB/ByLayer/ByBlock color — rendered as a color picker.
     ColorChoice(AcadColor),
+    /// Color-book color with its file-provided display name.
+    NamedColorChoice { color: AcadColor, name: String },
     /// Color varies across the current multi-selection.
     ColorVaries,
     /// Line weight — rendered as a combo_box.

src/scene/selection.rs

@@ -568,7 +568,8 @@ impl Scene {
                                     }
                                     QSelectValueEditor::Choice(values)
                                 }
-                                PropValue::ColorChoice(_) => QSelectValueEditor::Choice(vec![
+                                PropValue::ColorChoice(_)
+                                | PropValue::NamedColorChoice { .. } => QSelectValueEditor::Choice(vec![
                                     "ByLayer".into(),
                                     "ByBlock".into(),
                                 ]),
@@ -659,7 +660,13 @@ impl Scene {
         match field {
             "handle" => Some(entity.common().handle.value().to_string()),
             "layer" => Some(entity.common().layer.clone()),
-            "color" => Some(Self::format_color(entity.common().color)),
+            "color" => Some(
+                entity
+                    .common()
+                    .color_name
+                    .clone()
+                    .unwrap_or_else(|| Self::format_color(entity.common().color)),
+            ),
             "linetype" => Some(if entity.common().linetype.is_empty() {
                 "ByLayer".to_string()
             } else {
@@ -732,6 +739,7 @@ impl Scene {
                     PropValue::Choice { selected, .. } => selected,
                     PropValue::EditChoice { value, .. } => value,
                     PropValue::ColorChoice(c) => Self::format_color(c),
+                    PropValue::NamedColorChoice { name, .. } => name,
                     PropValue::LwChoice(lw)
                     | PropValue::FieldLwChoice { value: lw, .. } => {
                         Self::format_lineweight(lw)

src/scene/view/dispatch.rs

@@ -296,7 +296,9 @@ pub fn toggle_invisible(entity: &mut EntityType) {
 
 pub fn apply_color(entity: &mut EntityType, color: AcadColor) {
     entity.as_entity_mut().set_color(color);
-    entity.common_mut().color_book_handle = None;
+    let common = entity.common_mut();
+    common.color_name = None;
+    common.color_book_handle = None;
 }
 
 pub fn apply_line_weight(entity: &mut EntityType, lw: LineWeight) {