How can I change the field labels color?

Sorry to trouble you - are you able to advise how I would change the colour of the labels fro First Name, Date, Email Address etc.?

I have tried:

#first_12, #last_12{

   color: #0A12FA

}

or

#first_12, #last_12{

   font-color: #0A12FA

}

or

#day_13, #month_13, #year_13, #lite_mode_13{

  color: #0A12FA

}

I have also added:

form-label-left, .form-label-right, .form-label-top {

    color : #0A12FA !important;

which has changed the first question to the colour I want - but I can't get it to replicate on the other questions.

Any advice would be much appreciated.

Thank you in advance!

When you find the field ID you will get its number in the form as well, replace that number in the sample code below: 

li#id_12 .form-label {

    color: green;

}

This should be the result: 

If you would also like to change the sub-labels color (for example "first name" or "last name") then you should simply replace the class ".form-label" with  ".form-sub-label" and keep the field ID. 

Hope this helps.