cmslounge just released two free templates for Joomla 1.5. Tem_lightframe is a clean design, with a dropdown menu, fully-tableless code, minimalist styling and clever design . Tem_highergrounds is an adaption of a template with the same name by StyleShout, converted to Joomla by maintaining the clean code and beautiful color scheme.

Technical information about the template:
Standards:
- xHTML 1.0 valid
- CSS2 valid

The most interesting options of the SiteGround template are:
  1.The Administrator can choose among four season based themes + one general theme trough the Template theme dropdown.
  2.The Administrator can choose among two fixed and one fluid template width settings.
  3.The Administrator can choose whether the template is centered, left- or right- aligned
  4.The Administrator can provide the option to change all of the functionalities listed above to his/her visitors, via the unique Control panel bar, displayed at the top right corner of the site.
     NEW: Now the Administrator can enable/disable each of the three changers separately, allowing for leaving only selected ones.
 

Features:
Three Columns Layout
Fully collapsible module positions: user1, user2, user3, user4, top, left and right
Tableless CSS/XHTML valid architecture
Cross-browser compatible
Originally designed icons
Text resizer
Language files enables easy editing languages used in the template, for example 'You are here', and 'Change text size to large'

Parameters:
Four colour themes: Orange, Purple, Green and Blue
Two width options: Fixed and fluid.
Style switcher options: show or hide the style switchers
Logo Style options: use plain text or image for logo

Change the Logo Image
If you'd like to change the logo to your own:

1. Make sure your logo file is saved as a png-24 file.
2. Upload it to /templates/redevo_aphelion/images folder.
3. Open template.css file - Find

Code:
a#sitename1{
width:258px; /* maximum 500px */
height:52px; /* maximum 68px */
}
And change the width and height to the width and height of your logo image.

As said in the note, the logo file should be less than  500px wide and less than 68px high.
It should be transparent png-24.