I couldn't find a working WA for this trinket, so I made one myself.
It's pretty simple. It shows which buff is currently active (Crit, Haste, Versatility or Mastery) with icon and text.
This is a collection of 4 auras:
DinnerBell H (icon)
DinnerBell V (icon)
DinnerBell M (icon)
DinnerBell C (icon)