diff --git a/plots/README.md b/plots/README.md
index 388bb8d..9979fad 100644
--- a/plots/README.md
+++ b/plots/README.md
@@ -7,3 +7,7 @@
 ## discrete_colour_ramp_edges.py
 
 ![discrete colour ramp edges](png/discrete-colour-ramp-edges.png)
+
+## line_colours.py
+
+![line colours](png/line-colours.png)