diff --git a/config.default.yaml b/config.default.yaml
index 78a07e17..4085e719 100644
--- a/config.default.yaml
+++ b/config.default.yaml
@@ -509,6 +509,7 @@ plotting:
     solid biomass for industry CC: '#47411c'
     solid biomass for industry co2 from atmosphere: '#736412'
     solid biomass for industry co2 to stored: '#47411c'
+    biomass to liquid: '#32CD32'
     # power transmission
     lines: '#6c9459'
     transmission lines: '#6c9459'