diff --git a/devices/devicejson.go b/devices/devicejson.go
index 87f4267..7bce05f 100644
--- a/devices/devicejson.go
+++ b/devices/devicejson.go
@@ -2,10 +2,15 @@ package devices
 
 import "github.com/OrbTools/OrbCommon/gui"
 
+//ExtraBytes defines extra bytes to a type
+type ExtraBytes struct {
+	Name string
+	Size int
+}
+
 //Device defines a JSON device
-//NYI
 type Device struct {
-	EB      int
+	EB      []*ExtraBytes
 	BINDLEN int
 	BINDING []byte
 	GUI     gui.GUI
diff --git a/devjson/orbweaver.json b/devjson/orbweaver.json
index 64366a5..9216fcb 100644
--- a/devjson/orbweaver.json
+++ b/devjson/orbweaver.json
@@ -1,6 +1,11 @@
 {
     "BINDLEN": 26,
-    "EB": 3,
+    "EB": [
+        {
+            "Name": "Color",
+            "Size": 3
+        }
+    ],
     "BINDING": [
         41,
         2,