Adding a color mask in Photoshop is a great way to add a new color to an image. You can use masks to change the colors of specific areas of an image, or to change the entire image. To add a color mask in Photoshop, open the Image Editor and click on the Mask button. The Image Editor will show you a list of all the images in your project. Choose one of the images and click on the Mask button. The Image Editor will create a new mask for you and will show you how it works. The first thing that you need to do is select which area of the image you want to change. To do this, click on one of the corners of the image and drag it towards the center of the mask. Once you have dragged it all the way around, release it so that it stays in place. Now, select another corner of your image and drag it towards one of the edges of your mask. Once you have dragged it all the way around, release it so that it stays in place. Now, select another corner and drag it towards one end of your mask. Once you have dragged it all the way around, release it so that it stays in place. Finally, select one end of your mask and drag it away from your original location so that everything is now hidden behind your newmask!