How can I control the height of an Option element in Webkit?

This seems really simple but I can't even find something telling me that it's not possible, let alone how to do it.

I've got a page that uses expanded/multiple selects, and I can't seem to control the height of the options. They look really snug. In F开发者_如何转开发irefox, CSS values for option in height and line-height both seem to have the desired effect, as does padding, but not in Chrome 8 or Safari 5. Am I missing something? Here's a sample of my code. I've put in anything that could affect the option in case there's some overriding value that I'm missing.

body, input, select, checkbox { 
  font-family:'Avenir Lt Std',AppleGothic,'century gothic',Verdana,sans-serif; 
  font-size: 15px; 
  font-weight:200; 
  line-height: 18px; 
}

input, select { 
  color:#4c2a18; 
  border: 1px solid #cfc8b4; 
  background-color:#ffffff; 
  -moz-border-radius: 0; 
  -webkit-border-radius: 0; 
  border-radius: 0;
  margin:0; 
}

option { 
  height: 35px; 
  padding:5px; 
  line-height: 35px; 
}

<select size="5">
  <option value="">This is option 1</option>
  <option value="">Option 2</option>
  <option value="">Just trying to show how the line height thing works.</option>
</select>

You can view it in action here.

This is not possible in Chrome, according to the electric toolbox:

Setting padding on an optgroup or option has no effect in Chrome so you cannot control the amount of indentation. You can set the padding of a select as a whole in Chrome (as you can with IE8) but it looks really weird. Unlike IE8 you can click anywhere in the select to open it even if it has padding.