How to customize Gravity Forms style inside pop up

It seems like the plugin is overriding my theme styles. Any idea on how to fix this? I am trying to get one of my Gravity Forms to pop on a button trigger. It’s working! However, the colors/styles are not ideal.

Screen capture of live pop up with your plugin:

Here’s what a typical Gravity Form on our site looks like:

1. I would like to change the font color of the input fields. It’s pretty light so I’d like to make it darker. I have no idea where I do this. The pop up maker theme colors do not seem to be applying.
2. The submit button is not my default button. The button is grey with a black font. I have no idea where it’s pulling this. My default buttons have a background of #A11C37 with #FFFFFF for the font. There is also a 2px radius applied.

Here’s the landing page where the pop up is being used:

Thanks!

https://wordpress.org/plugins/popup-maker/