Error:(24, 41) error: cannot find symbol class ColorWheel I cant figure out why this wont work as in the video.

public class FunFactsActivity extends AppCompatActivity {

        private FactBook mFactBook = new FactBook();
        private ColorWheel mColorWheel = new ColorWheel();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_fun_facts);

        //Declare our View variables and assign them the Views from the layout file
        final TextView factlable = (TextView) findViewById(R.id.factTextView);
        Button showFactButton= (Button) findViewById(R.id.showFactButton);
        final RelativeLayout relativeLayout = (RelativeLayout) findViewById(R.id.relativeLayout);
        View.OnClickListener listener = new View.OnClickListener() {
            @Override
            public void onClick(View v) {
               String fact = mFactBook.getFact();
            //Update the label with our dynamic fact
            factlable. setText(fact);

            int color = mColorWheel.getColor();
                relativeLayout.setBackgroundColor(Color.RED);



            }
        };
        showFactButton.setOnClickListener(listener);