Most cheap generic gamepads that I knew copies dualshock design with L1 R1 and triangle square x and circle instead of Xbox design with LT RT A B X Y like this gamepad I have:
or even better add a way so that I can submit to steam my own button prompt that matches this gamepad actual appearance, as we can see the buttons are actually 1 2 3 4 colored with dualshock colors
Hello @minecraft2048, as far as I know, there's no standardized way to tell games what graphics to use as button prompts, so this feature request will be limited to big picture mode of steam.
Most cheap generic gamepads that I knew copies dualshock design with L1 R1 and triangle square x and circle instead of Xbox design with LT RT A B X Y like this gamepad I have:

or even better add a way so that I can submit to steam my own button prompt that matches this gamepad actual appearance, as we can see the buttons are actually 1 2 3 4 colored with dualshock colors