Final answer:
To recede or diminish the width of a wide nose, darker colors should be used.
Step-by-step explanation:
To recede or diminish the width of a wide nose, you would use darker colors. Darker colors have the effect of making objects appear smaller and receding into the background. By using a darker color on the sides of Tina's nose, it can create an optical illusion of narrowing and reducing the perception of width.