diff --git a/src/util/cast.js b/src/util/cast.js
index ab7c274c1..49c189039 100644
--- a/src/util/cast.js
+++ b/src/util/cast.js
@@ -93,6 +93,9 @@ class Cast {
         let color;
         if (typeof value === 'string' && value.substring(0, 1) === '#') {
             color = Color.hexToRgb(value);
+
+            // If the color wasn't *actually* a hex color, cast to black
+            if (!color) color = {r: 0, g: 0, b: 0, a: 255};
         } else {
             color = Color.decimalToRgb(Cast.toNumber(value));
         }