My Pharo 2.0 settings. I have this file in ~/Library/Preferences/pharo. They are run every time I open a Pharo 2.0 image.

settings.st

StartupLoader default executeAtomicItems: {
        StartupAction
                name: 'Settings'
                code: [
                        Author fullName: 'MartinDias'.
                        World color:Color darkGray darker.
                        CodeHolder showAnnotationPane: true.
                        MCCodeTool showAnnotationPane: true.
                        Deprecation raiseWarning: true.
                        Debugger alwaysOpenFullDebugger: true.
                        MCCacheRepository default directory: '/Users/tinchodias/Pharo/localRepository/' asFileReference.]
                runOnce: true.
}.