ensure color is string before calling toLowerCase() (#10129)

Author: chris48s

Diff for: badge-maker/lib/color.js

@@ -49,7 +49,7 @@ function normalizeColor(color) {
   } else if (color in aliases) {
     return aliases[color]
   } else if (isHexColor(color)) {
-    return `#${color.toLowerCase()}`
+    return `#${color.toString().toLowerCase()}`
   } else if (isCSSColor(color)) {
     return color.toLowerCase()
   } else {

Diff for: badge-maker/lib/color.spec.js

@@ -27,6 +27,8 @@ test(normalizeColor, () => {
   given('blue').expect('blue')
   given('4c1').expect('#4c1')
   given('f00f00').expect('#f00f00')
+  given('111111').expect('#111111')
+  given(111111).expect('#111111')
   given('ABC123').expect('#abc123')
   given('#ccc').expect('#ccc')
   given('#fffe').expect('#fffe')