What food colors mixed with brown that will make grey?

Mixing brown with certain food colors can create different shades of grey. Here are some food colors that, when mixed with brown, can create grey:

- Blue: Adding a small amount of blue to brown can create a cool grey. Start by adding a small amount of blue and gradually increase the amount until you reach the desired shade of grey.

- Green: Mixing green with brown can create a grey with olive undertones. Similarly to blue, start with a small amount of green and increase it gradually until you achieve the desired color.

- Purple: Adding purple to brown can result in a grey with red undertones, creating a warmer shade of grey. Start with a small amount of purple and adjust according to your preference.