removed transparency-based, too-light border

$C_line (#ddd) is the new/old preference, requested by @rxb in updated touchList styles

![touchlist](https://f.cloud.github.com/assets/1885153/1238970/e9d6cbcc-29f2-11e3-9cf0-c7892de41481.png)

this border-color affects the outer touchList border, which is typically a `ul.touchList.doc-box`