diff --git a/config/config.default.yaml b/config/config.default.yaml
index 325bbbaa..cafb9d1d 100644
--- a/config/config.default.yaml
+++ b/config/config.default.yaml
@@ -816,6 +816,7 @@ plotting:
     Coal: '#545454'
     coal: '#545454'
     Coal marginal: '#545454'
+    coal for industry: '#343434'
     solid: '#545454'
     Lignite: '#826837'
     lignite: '#826837'