Grey out the Time field in date assignment block

Hi All,

In my project we need to create a date profile in which i need a date rule to get today date and the time should be greyed out. i tried all day event but not working out for Zdate type. I tried different date types but Time field is not greyed out ( changing time to 00:00 is possible but client needs time to be empty)

With regards,

Selvam T