Coerce color to String

Author: carlo-quinonez

bin/github-label-sync.js

@@ -139,8 +139,11 @@ function merge(files) {
 
 	// Make sure leading `#` are stripped from the color property.
 	Object.keys(data).forEach((key) => {
-		const label = data[key];
-		label.color = label.color.replace('#', '');
+		const label = data[key]; 
+		const color = String(label.color);
+		if (color.startsWith('#')) {
+			label.color = color.replace('#', '');
+		}
 		labels.push(label);
 	});