Welcome to HBGames, a leading amateur game development forum and Discord server. All are welcome, and amongst our ranks you will find experts in their field from all aspects of video game design and development.
Another thing you can do is to have the RMXP/VX game files (the date, the graphics, the sound and the other system files for the game) in a different folder, and make a shortcut to the game file and change that icon to the one you want.