Code review comment for lp:~nicolas-doffay/ubuntu-ui-toolkit/ubuntu-shape-option-selector

Which branch are you referring to wrt the grey highlight? Can you merge the changes here now?

And to re-cap, these design questions need to be resolved:
* the only change there is expanding the list, but text shifts
* the border shape changes weird when expanding (like at the top it gets pretty thick)
* the chevron and "downward caret" signs are replaced in one frame
* shouldn't there be a transition when you change the selection in the "expanded" OptionSelector?