diff --git a/src/components/forms/buffered-input-hoc.jsx b/src/components/forms/buffered-input-hoc.jsx
index 246dfc03..b3561136 100644
--- a/src/components/forms/buffered-input-hoc.jsx
+++ b/src/components/forms/buffered-input-hoc.jsx
@@ -1,3 +1,7 @@
+/* DO NOT EDIT
+@todo This file is copied from GUI and should be pulled out into a shared library.
+See https://github.com/LLK/scratch-paint/issues/13 */
+
 import bindAll from 'lodash.bindall';
 import PropTypes from 'prop-types';
 import React from 'react';
diff --git a/src/components/forms/input.css b/src/components/forms/input.css
index 6d5eefa5..36855e44 100644
--- a/src/components/forms/input.css
+++ b/src/components/forms/input.css
@@ -1,3 +1,7 @@
+/* DO NOT EDIT
+@todo This file is copied from GUI and should be pulled out into a shared library.
+See https://github.com/LLK/scratch-paint/issues/13 */
+
 @import "../../css/units.css";
 @import "../../css/colors.css";
 
diff --git a/src/components/forms/input.jsx b/src/components/forms/input.jsx
index 6f9cbffa..1c6d087a 100644
--- a/src/components/forms/input.jsx
+++ b/src/components/forms/input.jsx
@@ -1,3 +1,7 @@
+/* DO NOT EDIT
+@todo This file is copied from GUI and should be pulled out into a shared library.
+See https://github.com/LLK/scratch-paint/issues/13 */
+
 import PropTypes from 'prop-types';
 import React from 'react';
 import classNames from 'classnames';
diff --git a/src/components/forms/label.css b/src/components/forms/label.css
index 5eb280b8..7871cdd3 100644
--- a/src/components/forms/label.css
+++ b/src/components/forms/label.css
@@ -1,3 +1,7 @@
+/* DO NOT EDIT
+@todo This file is copied from GUI and should be pulled out into a shared library.
+See https://github.com/LLK/scratch-paint/issues/13 */
+
 @import "../../css/units.css";
 @import "../../css/colors.css";
 
diff --git a/src/components/forms/label.jsx b/src/components/forms/label.jsx
index 62f077a7..475ffb00 100644
--- a/src/components/forms/label.jsx
+++ b/src/components/forms/label.jsx
@@ -1,3 +1,7 @@
+/* DO NOT EDIT
+@todo This file is copied from GUI and should be pulled out into a shared library.
+See https://github.com/LLK/scratch-paint/issues/13 */
+
 import PropTypes from 'prop-types';
 import React from 'react';
 
diff --git a/src/components/paint-editor.css b/src/components/paint-editor.css
index c72d45ad..71651430 100644
--- a/src/components/paint-editor.css
+++ b/src/components/paint-editor.css
@@ -27,20 +27,6 @@
     margin-left: calc(2 * $space);
 }
 
-.waveform-container {
-    display: flex;
-    justify-content: space-around;
-    align-items: center;
-    width: 100%;
-
-    position: relative;
-
-    background: $ui-pane-gray;
-    border: 1px solid $ui-pane-border;
-    border-radius: 5px;
-    padding: 3px;
-}
-
 $border-radius: 0.25rem;
 
 .button {
@@ -62,40 +48,6 @@ $border-radius: 0.25rem;
     min-width: 1.5rem;
 }
 
-.trim-button {
-    display: flex;
-    align-items: center;
-    padding-right: 10px; /* To equalize with empty whitespace from image on left */
-}
-
-.trim-button > img {
-    width: 1.5rem;
-}
-
-.trim-button-active {
-    filter: hue-rotate(155deg); /* @todo replace blue -> red with real submit icon */
-}
-
-.input-group-right {
-    flex-grow: 1;
-    display: flex;
-    flex-direction: row-reverse;
-}
-
-.effect-button {
-    flex-basis: 150px;
-    color: $text-primary;
-}
-
-.effect-button + .effect-button {
-    margin: 0;
-}
-
-.effect-button img {
-    width: 60px;
-    height: 60px;
-}
-
 .button-group {
     margin: 0 1rem;
 }
diff --git a/src/css/colors.css b/src/css/colors.css
index d524795c..0fe15fca 100644
--- a/src/css/colors.css
+++ b/src/css/colors.css
@@ -1,3 +1,7 @@
+/* DO NOT EDIT
+@todo This file is copied from GUI and should be pulled out into a shared library.
+See https://github.com/LLK/scratch-paint/issues/13 */
+
 $ui-pane-border: #D9D9D9;
 $ui-pane-gray: #F9F9F9;
 $ui-background-blue: #e8edf1;
diff --git a/src/css/units.css b/src/css/units.css
index 3de6174a..acb466b1 100644
--- a/src/css/units.css
+++ b/src/css/units.css
@@ -1,3 +1,7 @@
+/* DO NOT EDIT
+@todo This file is copied from GUI and should be pulled out into a shared library.
+See https://github.com/LLK/scratch-paint/issues/13 */
+
 $space: 0.5rem;
 
 $sprites-per-row: 5;