check for gene color only if gene is defiend

converter-graphics/src/main/java/lcsb/mapviewer/converter/graphics/bioEntity/element/species/SpeciesConverter.java

@@ -615,11 +615,14 @@ public abstract class SpeciesConverter<T extends Species> extends ElementConvert
   protected void drawTranscriptionSite(final TranscriptionSite transcriptionSite, final Graphics2D graphics) {
 
     Color color = graphics.getColor();
-    if (transcriptionSite.getActive() && !transcriptionSite.getSpecies().getColor().equals(Color.WHITE)) {
+    if (transcriptionSite.getActive()) {
       color = Color.RED;
     } else {
       color = Color.BLACK;
     }
+    if (transcriptionSite.getSpecies() != null && transcriptionSite.getSpecies().getColor().equals(Color.WHITE)) {
+      color = Color.BLACK;
+    }
     double y = transcriptionSite.getPosition().getY();
     double x = transcriptionSite.getPosition().getX();
     PolylineData line = new PolylineData();