Hi Megan,
If you're trying to change the label color, the only way I'm aware of is to change the css. Here's how:
Go to Form Settings > Form Theme
Then click the gear at the top right (under finish)
Click "Edit Custom CSS"
in the text box write this one line below:
label {color:
#c60c30; }
This changes it to red but you can replace the bold part with whatever hex color you want ( here's a quick guide to colors
http://www.w3schools.com/html/html_colors.asp)
Then click save... You wont see the changes in the edit screen but if do "Preview Draft" it will show.