Is it possible to change the tab display based on whether it contains a window with a buffer with unsaved changes?

[alligatortower]

I'm assuming it involvestab.wins().foreach({callback}) and then win.buf() but I'm not sure how to grab the state of the buffer from there.

[alligatortower]

local win_is_modified = function(win)
	return vim.bo[win.buf().id].modified
end

local tab_is_modified = function(tab)
	local is_modified = false
	tab.wins().foreach(function(win)
		if win_is_modified(win) then
			is_modified = true
		end
	end)
	return is_modified
end