How do I change Font color with Adobe Reader in fillable form fields?

[wittycarlos]

I have a fillable form created with Adobe Acrobat, but my users have Adobe Reader only, they want to change text colors in different fields. How can this be achieved?.

Thank you all

[PDF Automation Station]

Reader has no user interface for field properties but it can be done in Reader with a script.  You would have to create an interactive field or fields in Acrobat Pro first that changes the text color.  The command to change the text color is 

this.getField("TheFieldName").textColor= (a color from the color object);

[Bernd Alheit]

Allow Rich Text Formatting in the form text field and users can change the color of text.

[PDF Automation Station]

...by selecting the text and pressing Ctrl + e to activate the Rich Text toolbar.