Show a boolean as a pair of images? I have PictureEvents and those have a few boolean fields:

HasCD | HasDVD | HasSlowMo


I'd like to have an icon for each of them that is dim/bright in all the places where it's shown (I have a few Field-Views for the lists of PicutureEvents, and I'd like to place the icons below the video in the main page).

Where do you do this in Drupal 7?
Easiest way to do this would be in a content-type template. You want to create a template for your content type, ex. node--[type|nodeid].tpl.php and add this in your theme folder. In your template, for displaying the boolean field you could use logic like this:

&lt;?php 
if ($node-&gt;field_boolean_field[$node-&gt;language][0]['safe_value'] == 0) { 
    print "&lt;img src='no_img.jpg'&gt;";
} else {
    print "&lt;img src='yes_img.jpg'&gt;";
}
?&gt;


This similar question may help as well:

Optionally add image/icon after node title based on boolean content type field?