I aim to have a similar Bar at the top as here: <http://www.keltainenporssi.fi/>
The colour of the current site is in red, while other sites are in black.

How would you reach my aim? 
Perhaps by php?

The syntax in pseudo-code may be

```
if $site = A
    use-styleA
if $site = B
    use-styleB
else
    use-FinalStyle

```