I am trying to include a stylesheet in my theme:
wp_enqueue_style('colors-css', '/root/assets/css/colors.css?style=blue');
The problem is, WordPress escapes this, and adds a version number onto the end. So, instead of having this:
/root/assets/css/colors.css?style=blue&ver=3.9
I end up with this:
/root/assets/css/colors.css?style=blue&ver=3.9
What do I do to correct this so the URL is rendered correctly?
If the output that you're seeing is in your HTML, then it is correct. & is a reserved entity and can be encoded as & or &.
The browser will never send & in the URL for the request. It will be interpreted as &, as you intended.