The code wp_enqueue_style is looking to load a stylesheet (.css), what is in green.php?
This code might be useful to others!
WARNING THIS IS UN-TESTED CODE
I have changed Arron's code to give four post list output types, index (default), grid, excerpt, and postimage
http://wordpress.pastebin.com/Hacni4WQ
@Zeak: can you add a link to the options tutorial you used please?
you would need to copy loop.php from the parent to create and add three / four files to your child-theme, loop-index.php, loop-grid.php, loop-excerpt.php and loop-postimage.php
Move the index.php file to the child theme and this php code would call the loop, and would replace the standard code:
get_template_part( 'loop', 'index' )
With this code which gets the option and outputs one of the loop files.
$liststyle = get_option('zeakloop');
if (strlen($liststyle) <= 1 ) $liststyle = 'index';
Get_template_part( 'loop' , $liststyle );
NOTE:
The code in the pastebin has this code but the '' are missing in get_ template_part around the loop should be 'loop'
Anyone using the code and creating the loop parts please post them to WordPress pastebin for others to use and add them to this topic.
HTH
David