diff --git a/web_realart/public/control/control.css b/web_realart/public/control/control.css
index d25ede6..5e478a9 100644
--- a/web_realart/public/control/control.css
+++ b/web_realart/public/control/control.css
@@ -165,10 +165,6 @@ button.queued { animation: queued-blink 600ms ease-in-out infinite alternate; }
 .cd-colorsel { display:flex; gap:4px; margin:6px 0; }
 .cd-colorsel button.on { outline:2px solid #fff; }
 .cd-pattern { display:flex; flex-direction:column; gap:6px; }
-.cd-tabs { display:flex; gap:4px; margin:6px 0; }
-.cd-tab { width: auto; padding: 6px 10px; font-size: 12px; }
-.cd-tab.on { background:#2b6; color:#fff; }
-.cd-pane[hidden] { display:none; }
 .cd-modal { position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: flex;
   align-items: center; justify-content: center; z-index: 50; }
 .cd-modal[hidden] { display: none; }
diff --git a/web_realart/public/control/control.js b/web_realart/public/control/control.js
index e5430e1..54c0a7f 100644
--- a/web_realart/public/control/control.js
+++ b/web_realart/public/control/control.js
@@ -265,7 +265,7 @@ ws.addEventListener("message", (ev) => {
   }
   if (address === "/matrix/colormod") {
     const vi=Math.round(Number(args[0])), c=Math.round(Number(args[1]));
-    if (vi>=0&&vi<16&&c>=1&&c<=6) {
+    if (vi>=0&&vi<16&&c>=1&&c<=6&&matColorDefs[vi][c]) {
       const src=String(args[2]??"none");
       matColorDefs[vi][c].mod = (src==="none") ? null : {source:src, target:String(args[3]??"none"), depth:Number(args[4])||0};
       saveMatState();
@@ -275,7 +275,7 @@ ws.addEventListener("message", (ev) => {
   }
   if (address === "/matrix/colorpose") {
     const vi=Math.round(Number(args[0])), c=Math.round(Number(args[1])), n=Math.round(Number(args[2]));
-    if (vi>=0&&vi<16&&c>=1&&c<=6) {
+    if (vi>=0&&vi<16&&c>=1&&c<=6&&matColorDefs[vi][c]) {
       matColorDefs[vi][c].pose = [];
       for (let k=0;k<n;k++){ const b=3+k*2; matColorDefs[vi][c].pose.push({poseId:String(args[b]),action:String(args[b+1])}); }
       saveMatState();