Final answer:
To change the ink color for a pen or highlighter, you will need to have a pen or highlighter that allows you to change the ink color. Some pens and highlighters have a button or switch that you can use to change the ink color, while others come in sets with different colored inks.
Step-by-step explanation:
To change the ink color for a pen or highlighter, you will need to have a pen or highlighter that allows you to change the ink color. There are different types of pens and highlighters that come with multiple ink colors. Some pens and highlighters have a button or switch that you can use to change the ink color. For example, there are pens with four different ink colors - black, blue, red, and green - and you can switch between them by pressing the corresponding color on the pen. Similarly, there are highlighters with different ink colors, usually in a set of four or more colors. To change the ink color, simply press the appropriate color on the highlighter.