diff --git a/docroot/last/functions.js b/docroot/last/functions.js
index b827c78..305dc16 100644
--- a/docroot/last/functions.js
+++ b/docroot/last/functions.js
@@ -63,6 +63,7 @@ function ButtonControl(controlDiv, map) {
 	// Setup the click event listeners: simply set the map to Chicago.
 	controlUI.addEventListener('click', function() {
 		do_fit = !do_fit;
+		controlText.style.color = (do_fit) ? 'rgb(0,153,0)' : 'rgb(25,25,25)';
 	});
 }