The Random Number Generator on the App Store

number pickerNumber Picker. Pick. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29.This answer changes color of all fields of number picker, I mean color of unselected fields will change, too. But what if I want to change just selected field?!