There are a couple different ways that you can change colors in Photoshop. One way is to use the color picker tool. To do this, first make sure that the color picker tool is selected in the toolbox.
Then, click on the area of the image that you want to change the color of. A dialog box will appear with the color values. From here, you can either enter in a new color value, or you can use the color picker to choose a new color.
Another way to change colors in Photoshop is to use the Hue/Saturation tool. To do this, select the Hue/Saturation tool from the toolbox.
Then, click and drag over the area of the image that you want to change the color of. A dialog box will appear with various options for changing the hue, saturation, and lightness. Play around with these options until you get the desired effect.
You can also use the Replace Color tool to change colors in Photoshop. To do this, select the Replace Color tool from the toolbox. A dialog box will appear with various options for replacing colors.