diff --git a/tex/thesis.tex b/tex/thesis.tex
index 50c62fb..2d7f1ad 100644
--- a/tex/thesis.tex
+++ b/tex/thesis.tex
@@ -4866,7 +4866,9 @@ hosted using \gls{aws} using their proprietary Aurora implementation.
 
   \endgroup
   \caption[Meta-analysis overview]
-  {Overview of strategy used for meta-analysis}
+  {Overview of strategy used for meta-analysis. Colors: notebook (pink), input
+    files (green), analysis framework (blue), data store (cyan), analysis
+    pipeline (orange).}
   \label{fig:meta_overview}
 \end{figure*}