Theme development

Taxonomy theme allows you to theme by tax terms, but is there a way to theme by node type?

I'm going to attempt to use one drupal install for 5 or 6 sites. Basically the website is a media company that owns radio and TV stations so if possible it'd be nice to have one login. The difficulty is dealing with the themes. I think each site would have it's own theme. Is that doable with the site config? Here is looks like with each site config you could specify a different them it looks like. Is this what I want?

I'm using phptemplate to try and customize the output of the user profiles. I have profile.module enabled and I have added several custom fields.

There are two things I'm trying to do...

I'm looking to customize the Blue Marine theme. Is it possible to have the custom logo change everytime the page is refreshed or you click on a menu item? So everytime I click on a menu item or refresh hitting the F5 key, the custom logo will change to a different logo that I've created.

If Drupal isn't capable of doing it by regular means, does anyone know how it could be done?

Thanks in advance

http://notetoselfdontdie.com/members/node/86

so far, all i have been able to do is change the background of the button from transparent to white... and also generate loads of errors... argh...

the text in the .theme file mentions the properties for changing the color of the foreground/icon...

however they are listed in what looks like to me in a different "formate" than any of the parameters found in the .theme file... so being a non-technical dude i am trying loads of different things and of course nothing is working...

here is what the .theme file says:

**
* The default mp3 player is the flash XSPF player. If you want to override
* this behavior you can do so at the theme level.
*
* A couple of options that may be of interest:
* - backgroud color. If it's not specified, it'll default to transparent.
* 'b_bgcolor' => "000000"
* - foregroung (border and icon) color.
* 'b_fgcolor' => "FF0000"
* - foreground color by state. The order is: connecting (spinner),
* ready (arrow), playing (square), and ??? (not sure). The b_fgcolor value
* will be used for any ommitted values.
* 'b_colors' => "ff0000,,00000ff,000000",
*
* @param $node
* node object
* @param $options
* array of options to pass to the player. This allows you to override the
* any parameter passed to the player including colors, title,
* @return
* HTML string with a flash player

Hey Everyone,

I'm trying to figure out the what the block visibility settings would be for the gallery.module. I'm no expert at php and I'm pretty sure that none of the snippets were for Gallery. So I'm trying to create my own here, but unfortunatly, I have no idea how to get started on it, or if it is even possible since Gallery technically isn't part of the drupal structure.

Here is what I dug up from the handbooks, can this be used for the Gallery somehow?

Please let me know. Thanks in advance,
txcrew