How to change text and background color of answer editor

I’m in the process of customizing the css of my Anspress pages, so far I’ve been able to make the changes I need except for one.
I can’t seem to be able to change the text color of the text in the answers editor window (where you can answer someone’s question).  I’ve tried every possible css combination and nothing has worked.  I need to change the text color from black to white or something lighter.
Here is the page
https://beat-tweaks.com/the-question/17324/

There’s also another issue.  In order to activate this window, you have to click, an them so Ajax thing happens (I guess) and only then can you start typing.  Meaning you have to click twice to start typing an answer.  How do we solve this?