I have a similar issue. I need to make the button #4595d1 with white text and the reverse on hover. Currently the text on hover is using my theme’s transparent color and therefor the words disappear. I’ve used the above code in my theme’s “Custom CSS” field and WordPress’ Appearance Customizer and it doesn’t change anything.
I’d appreciate your help!
I’m also using your tool on this same exact theme and also having problems with field sizes. I when I tried to follow your directions above I don’t have the line “.visual-form-builder ul li {” in my theme’s “style.css” file.
My site is http://epicenteratedgewood.com and I’m currently working on page http://epicenteratedgewood.com/test-page