Just a few ideas:
Have you looked at the index.html that your current project is using. Possibly this has the reference to the skyhigh theme still in there.
Other option is the browser's cache, clear the cache and try again.
Use the developer tools/ firebug to see where the reference is coming from.
Hi Erwin,
I use Google Chrome to run my application. The problem was indeed the ideas that you have described. I head cleared the cache and the problem is solved.
Thank you!