[Trac #727] Need consistent visual style for button "pressed" states

[Zarro Boogs per Child]

#727: Need consistent visual style for button "pressed" states
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 Reporter:  Eben              |       Owner:  Eben     
     Type:  task              |      Status:  new      
 Priority:  high              |   Milestone:  Untriaged
Component:  interface-design  |    Keywords:           
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 This is a standard and expected behavior, but we don't yet have a visual
 style in the spec.  That results mostly from the fact that the design of
 all of the controls hasn't yet been completed either.  It is underway,
 though, and so I'll provide a more detail once I have a consistent visual
 spec for them.

 One item of interest is that, with SVGs, we can easily modify stroke and
 fill colors without the need to include a separate "pressed" state for
 every button.  I'm not sure if that's a good idea, though, since it limits
 developers who may have some other visual change beyond color that better
 indicates the effect of the press.  Until there's a more detailed spec,
 feel free to post comments and suggestions.

 Related to this ticket, please also discuss the need for rollover states.
 Most OSes don't actually have rollover states, so perhaps we don't need
 them.  On the other hand, most OSes use shading/gradients to make buttons
 look 3D, and therefore clickable.  Our interface doesn't have any such
 clues, so perhaps we do need something on rollover to reinforce the
 clickability of buttons.  Thoughts?

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Ticket URL: <http://dev.laptop.org/ticket/727>
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