Final answer:
A brush is used to apply lip color to a client's lips for precise and even application after removing it from the container with a spatula.
Step-by-step explanation:
To remove lip color from a container and then apply the color to the client's lips, you would use a brush. A brush allows for precise application and even distribution of lip color, ensuring a clean and professional finish. Other options like a Q-tip, finger, or sponge can be used for different makeup applications, but for applying lip color, a brush is generally the preferred tool.