diff --git a/source/GM-TE/GMTEEditableTileMap.class.st b/source/GM-TE/GMTEEditableTileMap.class.st
index 8adcb84a..087cbcdc 100644
--- a/source/GM-TE/GMTEEditableTileMap.class.st
+++ b/source/GM-TE/GMTEEditableTileMap.class.st
@@ -68,7 +68,7 @@ GMTEEditableTileMap >> model: anObject [
 
 {
 	#category : #'event handling',
-	#'squeak_changestamp' : 'TW 5/22/2024 18:32'
+	#'squeak_changestamp' : 'TW 5/22/2024 23:40'
 }
 GMTEEditableTileMap >> mouseDown: anEvent [
 	"TODO: make this useful."
@@ -76,13 +76,14 @@ GMTEEditableTileMap >> mouseDown: anEvent [
 	| clickedTile |
 	
 	clickedTile := self tileFromPosition: anEvent position.
-	clickedTile ifNotNil: [self updateTileSprite: clickedTile].
+	(anEvent redButtonPressed) ifTrue: [clickedTile ifNotNil: [self updateTileSprite: clickedTile]].
+	(anEvent yellowButtonPressed) ifTrue: [clickedTile ifNotNil: [clickedTile reset]].
 	^ true.
 ]
 
 {
 	#category : #'event handling',
-	#'squeak_changestamp' : 'Alex M 5/22/2024 19:57'
+	#'squeak_changestamp' : 'TW 5/22/2024 23:37'
 }
 GMTEEditableTileMap >> mouseMove: anEvent [
 
@@ -96,7 +97,17 @@ GMTEEditableTileMap >> mouseMove: anEvent [
 	self tileSelectionSet clearAllHighlightings.
 	self tileSelectionSet highlightTile: hoveredTile.
 
-	(anEvent redButtonPressed) ifTrue: [hoveredTile ifNotNil: [self updateTileSprite: hoveredTile]]
+	(anEvent redButtonPressed) ifTrue: [hoveredTile ifNotNil: [self updateTileSprite: hoveredTile]].
+	(anEvent yellowButtonPressed) ifTrue: [hoveredTile ifNotNil: [hoveredTile reset]]
+]
+
+{
+	#category : #'as yet unclassified',
+	#'squeak_changestamp' : 'TW 5/23/2024 00:08'
+}
+GMTEEditableTileMap >> resetAll [
+	
+	self gridTileMatrix do: [:aTile | aTile reset]
 ]
 
 {
diff --git a/source/GM-TE/GMTEEditor.class.st b/source/GM-TE/GMTEEditor.class.st
index 359c6e46..a61b2eba 100644
--- a/source/GM-TE/GMTEEditor.class.st
+++ b/source/GM-TE/GMTEEditor.class.st
@@ -558,6 +558,15 @@ GMTEEditor >> open [
       ^newMorph
 ]
 
+{
+	#category : #'button functions',
+	#'squeak_changestamp' : 'TW 5/23/2024 00:13'
+}
+GMTEEditor >> resetAll [
+
+	self tileMapMatrix resetAll
+]
+
 {
 	#category : #accessing,
 	#'squeak_changestamp' : 'TW 5/22/2024 16:12'
diff --git a/source/GM-TE/GMTEImageMorph.class.st b/source/GM-TE/GMTEImageMorph.class.st
index d396a457..e4bb29e3 100644
--- a/source/GM-TE/GMTEImageMorph.class.st
+++ b/source/GM-TE/GMTEImageMorph.class.st
@@ -39,6 +39,19 @@ GMTEImageMorph >> fullResolutionSprite: anObject [
 	fullResolutionSprite := anObject.
 ]
 
+{
+	#category : #'as yet unclassified',
+	#'squeak_changestamp' : 'TW 5/22/2024 23:32'
+}
+GMTEImageMorph >> setPlaceholderColor: aColor [
+
+	| placeholderForm |
+	placeholderForm := Form extent: self extent depth: 32.	
+	placeholderForm fillColor: aColor.
+	self fullResolutionSprite: placeholderForm.
+	self image: placeholderForm.
+]
+
 {
 	#category : #'as yet unclassified',
 	#'squeak_changestamp' : 'TW 5/22/2024 17:16'
diff --git a/source/GM-TE/GMTETile.class.st b/source/GM-TE/GMTETile.class.st
index d8789902..50382dfb 100644
--- a/source/GM-TE/GMTETile.class.st
+++ b/source/GM-TE/GMTETile.class.st
@@ -6,12 +6,30 @@ Class {
 
 {
 	#category : #'as yet unclassified',
-	#'squeak_changestamp' : 'Ivo Zilkenat 5/21/2024 20:08'
+	#'squeak_changestamp' : 'TW 5/22/2024 23:31'
+}
+GMTETile class >> placeHolderColor [
+		
+	^Color veryLightGray
+]
+
+{
+	#category : #'as yet unclassified',
+	#'squeak_changestamp' : 'TW 5/22/2024 23:32'
 }
 GMTETile class >> position: aPoint extent: anExtent [
 	"comment stating purpose of message"
 
 	^ self new
-		setPlaceholderWithExtent: anExtent color: Color veryLightGray;
+		setPlaceholderWithExtent: anExtent color: self placeHolderColor;
 		position: aPoint
 ]
+
+{
+	#category : #'as yet unclassified',
+	#'squeak_changestamp' : 'TW 5/22/2024 23:33'
+}
+GMTETile >> reset [
+
+	self setPlaceholderColor: GMTETile placeHolderColor
+]