Hi! Just to let you know. I have slightly improved the normalizer. You can now send #distinctColorUsing: aBlockOrSymbol Consider the following example: b := RTMondrian new. b shape circle. b nodes: Collection withAllSubclasses. b edges connectFrom: #superclass. b layout tree. b normalizer normalizeSize: #numberOfMethods; distinctColorUsing: #package. b This gives to each class a color depending on its package. Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.