What is the reply text and the text that is in the boxes at the left (Free Download Quota, clubs etc.) called? I can't figure it out so I can't change them.

You can't change them... because when you hover your mouse over those links, the rectangle highlights. Not quite sure what that is called, but they are default colours for anywhere you browse. Though I have seen some people change the colours of that ... you would need to find some javascript to override it I think

i wonder how you reset the whole thing.