I know this is an older thread but I needed the same thing and found a solution. Thought I'd post for anyone needed it...
This will put take out the Brackets around the attribute price and replace with spaces instead. The space is needed so the $Price is not butted right next to the option name.
Silver$50 ---> Silver $50
Attributes.php file:
Find this code:
Code:
$products_options_display_price= ' (' . $products_options->fields['price_prefix'] .
$currencies->display_price($new_attributes_price, zen_get_tax_rate($product_info->fields['products_tax_class_id'])) . ') ';
Change to THIS:
Code:
$products_options_display_price= ' ' . $products_options->fields['price_prefix'] .
$currencies->display_price($new_attributes_price, zen_get_tax_rate($product_info->fields['products_tax_class_id'])) . ' ';
Basically just swapping out the (brackets) for a space.