I am in PharoCore 12066 and there are still references to PluggableButtonMorphPlus, which doesn't exist anymore: 1) MorphicToolBuilder >> buttonClass ^ PluggableButtonMorphPlus is it ok to change it to buttonClass ^ PluggableButtonMorph ? 2) UITheme >> newButtonIn: aThemedMorph for: aModel getState: stateSel action: actionSel arguments: args getEnabled: enabledSel getLabel: labelSel help: helpText |b| b := PluggableButtonMorphPlus on: aModel getState: stateSel action: actionSel label: labelSel. .... is it ok to change it to |b| b := PluggableButtonMorph on: aModel getState: stateSel action: actionSel label: labelSel. ? 3) MorphicToolBuilderTests >> expectedFailures "Polymorph override of PluggableButtonMorphPlus>>update: makes color not being updated anymore in respond to sending #changed:. Was this an intentional change and this test is obsolete?" ^ #(testGetButtonColor) I don't know how this one should be. But it should be updated, at least the class name. Thanks Mariano