About color selectors 
A color selector lets users choose colors from a popup color palette. This field can open the standard FirstClass color selector or a form that is your own custom selector. 
Color selector when drawn: 
Color selector when used: 
 
  
Adding color selectors 
1       Choose Fields > Selectors > Color Selector. 
2       Add this field to the form. 
3       Update the following fields on the Contents tab of the Field Attributes form as required: 
 
Custom color selector ID  | 
The form ID of your own color selector, if you want to use a different selector than the default.  | 
 
Dropdown icon ID  | 
The resource ID for the icon you want, if you want to change the icon on the popup palette button. The value Default results in the standard down arrow.  | 
 
RGB value  | 
The red, green, blue value for the default color, if you want a different default color than black.  | 
 
  
 |