diff --git a/pom.xml b/pom.xml
index 7e08e84..17a30b9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,6 +9,18 @@
         <maven.compiler.source>1.10</maven.compiler.source>
         <maven.compiler.target>1.10</maven.compiler.target>
     </properties>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>16</source>
+                    <target>16</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 
     <groupId>ovh.gasser</groupId>
     <artifactId>shapes</artifactId>
diff --git a/src/main/java/ovh/gasser/newshapes/ui/Controller.java b/src/main/java/ovh/gasser/newshapes/ui/Controller.java
index 6c49c51..a7cc8f1 100644
--- a/src/main/java/ovh/gasser/newshapes/ui/Controller.java
+++ b/src/main/java/ovh/gasser/newshapes/ui/Controller.java
@@ -3,9 +3,11 @@ package ovh.gasser.newshapes.ui;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import ovh.gasser.newshapes.Selection;
+import ovh.gasser.newshapes.attributes.ColorAttributes;
 import ovh.gasser.newshapes.shapes.SCollection;
 import ovh.gasser.newshapes.shapes.Shape;
 
+import java.awt.*;
 import java.awt.event.KeyAdapter;
 import java.awt.event.KeyEvent;
 import java.awt.event.MouseAdapter;
@@ -69,18 +71,26 @@ public class Controller {
 
     private void handleKeyPressed(KeyEvent evt) {
         switch (evt.getKeyCode()) {
-            case KeyEvent.VK_DELETE:
-                deleteSelected();
-                break;
-            case KeyEvent.VK_C:
-                copySelection();
-                break;
-            default:
-                logger.warn("Pressed unhandled key: {}", evt.getKeyChar());
-                break;
+            case KeyEvent.VK_DELETE -> deleteSelected();
+            case KeyEvent.VK_C -> copySelection();
+            case KeyEvent.VK_A -> changeSelectionColor();
+            default -> logger.warn("Pressed unhandled key: {}", evt.getKeyChar());
         }
     }
 
+    private void changeSelectionColor(){
+        if (selection == null) {
+            logger.debug("No selection to change color of");
+            return;
+        }
+        if (selection.shape instanceof SCollection collection) {
+            collection.forEach(shape -> shape.addAttributes(new ColorAttributes(false, true, Color.BLACK, new Color((int) (Math.random() * 0x1000000)))));
+        } else {
+            selection.shape.addAttributes(new ColorAttributes(false, true, Color.BLACK, new Color((int) (Math.random() * 0x1000000))));
+        }
+        view.repaint();
+    }
+
     private void copySelection() {
         if (selection == null) {
             logger.debug("No selection to copy");