(color) is an error?

I got the Fun Facts app from GitHub as the video showed and now I'm getting an error when I hover over (color). This is the end of the code:

color = mColors[randomNumber];
        int colorAsInt = Color.parseColor(color);

        return colorAsInt;
    }

This is what it says: "Length must be at least 1 (was 0) less... (⌘F1) This inspection looks at Android API calls that have been annotated with various support annotations (such as RequiresPermission or UiThread) and flags any calls that are not using the API correctly as specified by the annotations. Examples of errors flagged by this inspection: Passing the wrong type of resource integer (such as R.string) to an API that expects a different type (such as R.dimen). Forgetting to invoke the overridden method (via super) in methods that require it Calling a method that requires a permission without having declared that permission in the manifest Passing a resource color reference to a method which expects an RGB integer value. ...and many more. "

What does this mean and how can I fix it?