Right-to-left Support
RadColorPicker fully supports right-to-left (RTL) language locales. In order to turn on the RTL support you should set dir=rtl to the html or body element or at least to its parent element. You can also use the direction:rtl CSS property.
<div dir="rtl">
<telerik:RadColorPicker RenderMode="Lightweight" runat="server" ID="RadColorPicker1" PaletteModes="All">
</telerik:RadColorPicker>
</div>