There are a few ways to remove color from images in Photoshop. The most common way is to use the “Color Filter” tool, which is located in the “Tools” panel of the Photoshop window. This tool allows you to select a color and then change its hue, saturation, and lightness. Another way to remove color is to use the “Image Filter” tool, which is located in the “Filters” panel of the Photoshop window. This tool allows you to select a filter and then change its properties. For example, you can use this tool to remove red from an image.