Hello,
I’ve checked your webpage and the CSS rule you describe is not being included. I recommend you a simpler solution, please, follow the steps below:
1. Insert a “HTML Content” field in the form.
2. Enter as its content the piece of code below:
<style>
.cp_cff_clean #fbuilder span.uh { color: #252525 !important; }
</style>
Note: the class .cp_cff_clean is defined in the template selected.
3. Finally, as the selected template displays a gray frame with the fields, and of course you don’t want to display it with “HTML Content” field that is used as auxiliary, enter through the attribute: “Add Css Layout Keywords” the special class name: hide
and that’s all.
Note: into the pair of tags <style></style>
you can define all CSS rules you want.
Best regards.