Re: Wiki links color
You have to edit the stylesheet file for the theme that you're using.
Eg., I use the theme moreneat. So I'd have to edit the file /styles/moreneat.css
In moreneat.css, I look for the lines
/* Links to wiki pages */ .wiki { color:#335966; text-decoration:underline;} .wiki:hover {color: #436976;text-decoration:underline;}
Just replace "#335966" with the code for the colour you want wikii links to render in.
Another useful thing you could do while you're at it is add a line that will justify all your wiki text.
You do this by including the following line in the "div.wikitext" section
text-align:justify;
Hope this helps.
Prashant