CC-Tweaked/src/main/resources/assets/computercraft/models/block/computer_command_on.json

{
    "parent": "block/orientable",
    "textures": {
        "front": "computercraft:block/computer_command_front_on",
        "side": "computercraft:block/computer_command_side",
        "top": "computercraft:block/computer_command_top"
    }
}