[yt-users] How to change the name of my colorbar?

Hi, I’m plotting a snapshot of my simulation, and I want to adjust the name for my color bar (e.g., changing “Density” to some other notation https://yt-project.org/doc/visualizing/plots.html#set-axes-units https://yt-project.org/doc/visualizing/plots.html#set-axes-units). However, I only find functions to change the name of x and y axis. Is there a way that I can change the name of my colorbar too? Thanks, Huanqing