(newbie) trouble with categories and skins

[Obelisco]

Hi, I've been asking too much questions today, but I ran into the wysiwyg
bug and everything is nuts in my wiki.

1. I can't edit the categories in my blog. I click on edit categories, but
all I get is a blank box. I also can't delete the blank boxes I have added.

2. I want to change the color blue, for color green on the title 1 of the
wiki, can this be done. I have clicked on the new skins link, but it seems
the page doesn't exist.

Thanks,

O.
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