This works for me with fracking universe. It shows the tooltip and it works with the newest version of starbound (3 may 2021)

Yes, should be.

Is this mod client-side?

I do not know, if it's complete overhaul mod it's likely changing rotting file too.. so then no. In that case you can suggest this sort of change to that mod devs. Find out if it contains rotting.lua file in the pak.

frackin universe compatible????????????
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looks very useful
I'm always in survival and wonder how long foods got. :P

1.1 added text coloring with same timing as vanilla game (red, orange, yellow, green).