Disqus Problem (no nails, I need help)

Hey, ladies! I switched to disqus and I hope you prefer this way of commenting, but I have an issue with the colour scheme. You see, the background for my disqus should be white as it is on all the other blogs I've seen, but it is grey. Grey with black letters on. OMG.

Of course I tried to find solution on the Internet, I tried to find solution on disqus Help page, but what I found didn't help me at all. Changing colour scheme in general settings just changed colour of the letters (to white) and when I wanted to change HTML, I didn't even find what I was supposed to find in the html of my blog. I feel totally stupid and useless, so I'm turning to you, lovely readers, do you have any idea what to do? An experience alike? If so, please help me.
In case I don't find a solution, should I just go along with black on grey?

(There is a huge probability I will delete this post when it is not needed anymore.)