REDCLOVER'S PROFILE

I have some tall grass in my game that I'd like the player to be able to walk behind. However, using the star icon for passability means that the player's head is also shown underneath, which looks rather silly. I tried searching the forums and found that RMVX Ace has a setting called "bush" which fits this perfectly.

Is there a way to replicate this effect in RPG Maker 2003?