There is none, but you can extend from the existing one 
(qx.ui.control.ColorSelector) and add a slider / selectbox for the transparency.

Tino



Am 19.03.2012 um 14:21 schrieb Patrice Oostermeyer:

Hello all,

Is there a ColorSelector in which I can change the alpha channel?
Like the default ColorSelector lets me pick only RGB values, and I need to set 
also transparency.
Preferably the thing shourd return "rgba(255,0,0,0.7)" or something liewise.

regards,
Patrice
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