Yes you can do, please follow my instructions. Go to wc-fields-factory plugin folder -> includes/wcff-injector.php and the line number 472
*(after this line preferredFormat: “‘.$colorformat.'”,’; )
add the line `if( $field[“show_palette_only”] != “yes” ){
$color_picker_script .= “showInput: true,”;
}`
See the result : 
And also we add this feature in our next release with optional
There is 2 preferredFormat: “‘.$colorformat.’”,’; in the file. Which one is line number 472? The first one or 2nd one?
I open with Wordpad, no line number.
Please trying to open notepad++ or any other php ide
Notepad is just the same. No line number.
I did a search in the file and 2 results for “‘.$colorformat.’” Could you please tell whether I should edit the first appeared “‘.$colorformat.’” or the 2nd?