"Is there any way of changing there style so that they don't conform with the rest of the phpbb style?"
yes there is :p I'm working on a review right now.
class="forumline"
<table class="forumline" border="0" cellpadding="2" cellspacing="1" width="100%">
I found it. It is located in overall_header.tpl if you are using the phpbb board
/* This is the outline round the main forum tables */
.forumline { background-color: #FFFFFF; border: 2px #006699 solid; }
If you add color this color: rgb(255,255,25) into the brackets it should change the font to another color.
It should look like this
/* This is the outline round the main forum tables */
.forumline { background-color: #FFFFFF; border: 2px #006699 solid; color: rgb(255,255,25)}
now I don't know what color you want to use...so...
http://www.psyclops.com/tools/rgb/ you can this site or you can google rgb color converter to figure out which colors you want to use.
but if you change anything in the .forumline class, everything else using that to define how the text is dispalyed on the page will change also as i'm sure you know.
if it makes you feel better, I have never like soccer until i viewed your site

yep if you want to believe that go ahead.
The text at the top of the page
Footbawl.co.uk is a forum where you can come and talk to fellow supporters
Could you jazz up the text a little bit your using arial fon't I believe, and it just doesn't do all the white space you have up there justice. and when you add "with in reason" from my own personal view really does affect the excitement you have for the use of the Forums. It's like having an all you can eat buffet, but you are told you can only have 3 items on your plate at a time.
Did you make the theme yourself or did you get someone to do it for you? It looks nice.
I like the splash page.
Honestly the site is preety well bolted down. I haven't really have any problem with any of the design, or layout. The whitespace at the top is my really only beef with the site. If you coudl fix that it would would be a high mark in my book.