#ImageJ macro debugging reloaded 🤯 After struggling for a while trying to understand why a macro does not work as expected (black image) with my ImageJ, but fine with others. We finally found out the foreground color for my imageJ installation was actually set to black, so `roiManager("Fill");` was basically not doing anything. Here is the magic line to fix it `run("Colors...", "foreground=white background=black selection=yellow");`