Colors

Black - palettes, popups
Toolbar Grey #262626 - toolbars, expanded palette
Button Grey #808080 - buttons
Selection Grey #A6A6A6 - selection, expanded panels
Panel Grey #C0C0C0 - panel, desktop
Text field Grey #E5E5E5 - text field background
White - pressed states and multiline text areas

States

Default - gtk.STATE_NORMAL
Focused - gtk.STATE_SELECTED
Pressed - gtk.STATE_ACTIVE
Hover - gtk.STATE_PRELIGHT
Inactive - gtk.STATE_INSENSITIVE

gtk.Button

* The image should work the same of the image button
* Need to write a theme to match the visual style
* Cancel should never be default because you can always activate it with Esc
* Radius should be 1/2 of the control height
* Write a list of stock icons people should use and replace them in the theme to match our visual style

sugar.Icon

* Used in canvas-like views so probably an Hippo item.
* Svg Only.
* It should support xo colors easily.
* Rollovers with a focus mark.

sugar.IconButton

* Support for SVG and png.
* Icons should be grey scale. But might be coloured with the XO colors (svg only)
* Size of the button is 75 pixels, size of the icon canvas is 55 and suggested icon size is around 45.
* States, defaults:
    Hover : Black
    Pressed : Rounded rectangle 61 pixels, 10 pixels of radius, filled in selection grey
    Focused : Rounded rectangle 61 pixels, 10 pixels of radius, stroked in white 2.25 points
    Inactive. Fallbacks if no inactive icon is specified.
        Svg: Remove the fill and render the stroke in button grey
        Png: just do some effect on the pixbuf, which also work for grey icons
* You can set an icon for each states which replace the default except for the Hover state of buttons which has rollover.
* "palette" boolean property. If true show an arrow active immediately on click (but also on hover)

sugar.ToolButton (support for rollovers)

* Contains IconButton
* There is no palette but a tooltip.
* Normal: Button grey rounded filled rectangle
* Inactive: Button grey rounded stroked rectangle
    
sugar.ToggleIconButton

* Toggled should be like Pressed
* Inconsistent should be the same of Default (the action depend on the cases)
* Pressed state and Toggled state is Selection grey

sugar.ToolIconButton

* Contains a ToggleIconButton

gtk.CheckButton

* Match the visual design, shoul be possible with just theme changes

gtk.RadioButton

* Exactly like CheckButton just a different indicator

gtk.OptionMenu

* Match the visual style. Hopefully only theme changes.
* Add the scroll thing.
* Groups. Either by a normal separator or a titled separator.