How to reproduce :

• put the line below in a css file of your model :

      .myclass{
           border-radius:10px /* AMETYS ("default.default.border-radius") */;
      }

• generate and edit a skin from this model
• the button corresponding to this line is not created in the skin factory ribbon.

> we should provide an easly process to add css properties that have not been initialy planned. We need this one :

• border-radius,
• text-shadow,
• box-shadow,
• background-position,
• background-repeat,
  and probably lot of more.