I tried to add some feedback when manipulating scrollbars and buttons in the default Pharo Theme. Adding the following four methods to PharoTheme gives a reversed look when clicking on a scrollbar or a button : PharoTheme>>buttonPressedFillStyleFor: aButton "Return the pressed button fillStyle for the given button." (aButton valueOfProperty: #noFill ifAbsent: [false]) ifTrue: [^ SolidFillStyle color: Color transparent ]. ^ self glamorousReverseFillStyleFor: aButton height: aButton height PharoTheme>>glamorousReverseFillStyleFor: aMorph height: anInteger "Return the reversed button fillStyle for the given button." | baseColor | baseColor := self glamorousBaseColorFor: aMorph. ^ self glamorousReverseFillStyleWithBaseColor: baseColor for: aMorph height: anInteger PharoTheme>>glamorousReverseFillStyleWithBaseColor: aColor for: aMorph height: anInteger | top bottom | top := aColor twiceLighter. bottom := aColor. ^(GradientFillStyle ramp: { 0.0->bottom. 0.7->top.}) origin: aMorph bounds origin; direction: 0 @ anInteger; radial: false PharoTheme>>scrollbarPressedThumbFillStyleFor: aScrollbar "Return the pressed scrollbar fillStyle for the given scrollbar." ^ (self glamorousReverseFillStyleWithBaseColor: aScrollbar paneColor for: aScrollbar height: aScrollbar height) direction: (aScrollbar bounds isWide ifTrue: [0 @ aScrollbar height] ifFalse: [aScrollbar width @ 0]) It makes the default interaction a lot more reactive (i.e. you notice on screen when you are pressing on a button). Side note about UI changes in Nautilus: will there be any changes about the Groups/Hierarchy/Class/Comments buttons ? I have a hard time getting used to them (lack of selection/state clues, unusual behavior for buttons). Thierry -- Thierry Goubier CEA list Laboratoire des Fondations des Systèmes Temps Réel Embarqués 91191 Gif sur Yvette Cedex France Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95