Can't find the name of some fields to change them in StyleVar. PLEASE help.

[CliffyTX]

I'm going to put this in as simple of terms as I can. Admittedly, I'm brand new to starting from scratch with vBulletin, or any forum software for that matter, but I've managed to do okay thus far.

I'm now trying to create my first post, rules for the site, and for the life of me, I can NOT find the name of the fields to edit anything to do with them.

The problems: (See attachment)
1) Site, when using the 'theme' I'm wanting to make default (and doing all the customizations to) is overall dark, intentionally. In some areas, such as you'll see in the attachment, have dark text and I can't find its 'title' to change its text color, etc.

2) The biggest problem is when I go to make a new post, my first on the forum: The area to enter the body of the post's text is white...and so is the font. Ideally, I'd like to change the font to dark for that area, but I'm willing to keep the font white if I can change the text-entry area in that section to a dark color or image. (The placeholder text, "Write something..." is fine. But when I go to start writing the text for the post, it's white. This isn't an issue in the 'Enter title' area, as its placeholder is dark and so is the text when you type.)

Hopefully all of this will make sense to everyone when you view the attachment.

This problem is perplexing me to the point of insanity and I've been searching and trying for hours upon hours.

Thanks.

(Using vBulletin 5.1.9 Connect if that matters. Seriously considering starting from scratch with an earlier version after all the horror stories I've been reading, but trying to give it a chance.)