Love the theme and the Asteroid Options are really terrific! I do have an issue with regard to the use of an image-only for the header. I noticed that when this is the case, and no header text is displayed, the image itself does not contain a link to the home url.
It's standard practice to allow the visitor to instantly navigate to the root of the site by clicking the header image and/or text.
Before I manually modify the code to the Asteroid theme I thought I'd mention that it would be a wonderful addition to have the image linked to the home of the site should the image be all that is displayed.
Maybe in a future update? ;)
Many thanks for a really simple and useful design. :)