diff --git a/tools/lammps-gui/TODO.md b/tools/lammps-gui/TODO.md
index 0ebb24eac1..32d2e46baf 100644
--- a/tools/lammps-gui/TODO.md
+++ b/tools/lammps-gui/TODO.md
@@ -6,6 +6,9 @@ LAMMPS-GUI TODO list:
 - figure out stacking order of frames and whether it can be more flexible
 - figure out how to avoid corrupted cached thermo data while reading it.
 - bundle LAMMPS tutorial input files
+- add a "Colors" menu to the image viewer to adjust color settings for the
+  current image (unlike the defaults in the perferences). Support color by
+  property (e.g. scan computes or fixes with per-atom data), define colormaps etc.
 
 - implement indenting regions for (nested) loops?
 - implement data file manager GUI with the following features: