diff --git a/background.js b/background.js
index ad5dc1c..04cbabf 100644
--- a/background.js
+++ b/background.js
@@ -7,4 +7,22 @@ chrome.runtime.onInstalled.addListener(() => {
 			], actions: [ new chrome.declarativeContent.ShowPageAction() ]
 		}]);
 	});
+});
+
+chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
+	let icons = request.killingStickies ? {
+			"16":	"images/ASK_on_16.png",
+			"32":	"images/ASK_on_32.png",
+			"48":	"images/ASK_on_48.png",
+			"128":	"images/ASK_on_128.png"
+	} : {
+			"16":	"images/ASK_off_16.png",
+			"32":	"images/ASK_off_32.png",
+			"48":	"images/ASK_off_48.png",
+			"128":	"images/ASK_off_128.png"
+	};
+	chrome.pageAction.setIcon({
+		path: icons,
+		tabId: sender.tab.id
+	});
 });
\ No newline at end of file
diff --git a/contentScript.js b/contentScript.js
index e95a50c..759d12e 100644
--- a/contentScript.js
+++ b/contentScript.js
@@ -33,8 +33,8 @@ function checkForShouldKillSticky(result) {
 	return shouldKillSticky;
 }
 
-function updateIcon(result) {
-	// TODO: code!
+function updateIcon(shouldKillSticky) {
+	chrome.runtime.sendMessage({ "killingStickies" : shouldKillSticky });
 }
 
 /******************/
@@ -45,7 +45,7 @@ function initialize() {
 	chrome.storage.sync.get([ "matchingPatterns", "exclusionPatterns", "mode" ],
 	(result) => {
 		let shouldKillSticky = checkForShouldKillSticky(result);
-		updateIcon(result);
+		updateIcon(shouldKillSticky);
 		window.onload = () => {
 			if (shouldKillSticky) killSticky();
 		};
diff --git a/images/ASK128.png b/images/ASK128.png
deleted file mode 100644
index dbdc49b..0000000
Binary files a/images/ASK128.png and /dev/null differ
diff --git a/images/ASK16.png b/images/ASK16.png
deleted file mode 100644
index ec99e57..0000000
Binary files a/images/ASK16.png and /dev/null differ
diff --git a/images/ASK32.png b/images/ASK32.png
deleted file mode 100644
index e930cfc..0000000
Binary files a/images/ASK32.png and /dev/null differ
diff --git a/images/ASK48.png b/images/ASK48.png
deleted file mode 100644
index 5d060e9..0000000
Binary files a/images/ASK48.png and /dev/null differ
diff --git a/images/ASK_off_128.png b/images/ASK_off_128.png
new file mode 100644
index 0000000..4f5ba25
Binary files /dev/null and b/images/ASK_off_128.png differ
diff --git a/images/ASK_off_16.png b/images/ASK_off_16.png
new file mode 100644
index 0000000..50b2657
Binary files /dev/null and b/images/ASK_off_16.png differ
diff --git a/images/ASK_off_32.png b/images/ASK_off_32.png
new file mode 100644
index 0000000..ef2e6a4
Binary files /dev/null and b/images/ASK_off_32.png differ
diff --git a/images/ASK_off_48.png b/images/ASK_off_48.png
new file mode 100644
index 0000000..b7cc096
Binary files /dev/null and b/images/ASK_off_48.png differ
diff --git a/images/ASK_on_128.png b/images/ASK_on_128.png
new file mode 100644
index 0000000..a64f1dd
Binary files /dev/null and b/images/ASK_on_128.png differ
diff --git a/images/ASK_on_16.png b/images/ASK_on_16.png
new file mode 100644
index 0000000..38eb6cc
Binary files /dev/null and b/images/ASK_on_16.png differ
diff --git a/images/ASK_on_32.png b/images/ASK_on_32.png
new file mode 100644
index 0000000..125bfa2
Binary files /dev/null and b/images/ASK_on_32.png differ
diff --git a/images/ASK_on_48.png b/images/ASK_on_48.png
new file mode 100644
index 0000000..a0e7dfb
Binary files /dev/null and b/images/ASK_on_48.png differ
diff --git a/manifest.json b/manifest.json
index eab386c..dd4121a 100644
--- a/manifest.json
+++ b/manifest.json
@@ -20,17 +20,17 @@
 		"default_popup":	"popup.html",
 		"default_title":	"AlwaysKillSticky - Click the icon to control sticky-killing on this site!",
 		"default_icon":		{
-			"16":				"images/ASK16.png",
-			"32":				"images/ASK32.png",
-			"48":				"images/ASK48.png",
-			"128":				"images/ASK128.png"
+			"16":				"images/ASK_on_16.png",
+			"32":				"images/ASK_on_32.png",
+			"48":				"images/ASK_on_48.png",
+			"128":				"images/ASK_on_128.png"
 		}
 	},
 	"icons":			{
-		"16": "images/ASK16.png",
-		"32": "images/ASK32.png",
-		"48": "images/ASK48.png",
-		"128": "images/ASK128.png"
+		"16": "images/ASK_on_16.png",
+		"32": "images/ASK_on_32.png",
+		"48": "images/ASK_on_48.png",
+		"128": "images/ASK_on_128.png"
 	},
 	"options_page":		"options.html"
 }
\ No newline at end of file