No, the PC app icons have not disappeared. They may have been moved or hidden, but they can usually be found by searching for the specific app in the start menu or by checking the desktop or taskbar for shortcuts. If the icons are still not visible, it may be a technical issue that can be resolved by restarting the computer or adjusting the display settings. **

App icons are sometimes briefly gray when they are in the process of being updated or installed on a device. This gray appearance indicates that the app is not fully functional or accessible at that moment. Once the update or installation process is complete, the app icon will return to its normal color and the app will be ready to use. **

One can create app icons themselves by using graphic design software such as Adobe Photoshop, Illustrator, or Canva. Start by creating a canvas with the required dimensions for the app icon. Then, design the icon using shapes, colors, and text to represent the app's brand or functionality. It's important to ensure that the icon is visually appealing and easily recognizable at smaller sizes. Finally, export the icon in the required file format (such as PNG or SVG) and size for use in the app. **

You can get custom app icons by using a third-party app or by manually creating and customizing them yourself. There are several apps available on the App Store or Google Play Store that allow you to customize your app icons, such as Icon Themer or Widgetsmith. These apps provide a variety of icon styles and designs for you to choose from and apply to your home screen. Alternatively, you can create your own custom icons using design software or by downloading icon packs from websites and then manually setting them as your app icons through your device's settings. **

To change all app icons on a smartphone, one can use a custom launcher app that allows for extensive customization of the home screen and app icons. There are several launcher apps available on both the Google Play Store and the Apple App Store that offer the ability to change app icons. These apps allow users to choose custom icon packs or even create their own icons to replace the default ones. By installing and setting up a custom launcher app, one can easily change all app icons on their device to create a personalized and unique look. **

App icons sometimes turn briefly gray when a user taps on them to open the app. This gray color change is a visual feedback to indicate that the app is being accessed. It is a common design element used in many mobile operating systems to provide users with a clear indication that their action has been registered and the app is launching. **

You can use various apps to change icons on your device, such as Icon Changer, Nova Launcher, or Icon Pack Studio. These apps allow you to customize the look of your icons by choosing from a wide range of designs and styles. Simply download the app of your choice from the app store, select the icons you want to change, and customize them to your liking. **

To create app icons for iOS, you will need to design them in various sizes to accommodate different devices and screen resolutions. The recommended sizes for app icons are 180x180 pixels for iPhone and 167x167 pixels for iPad. You can use design software like Adobe Photoshop or Illustrator to create the icons, making sure to follow Apple's guidelines for icon design. Once you have created the icons, you can use Xcode or other app development tools to add them to your iOS app project. **