[embryo]

After some testing, I think that the FBReader 1.9.4 for Nook Simple Touch drains the battery really fast, so I switched to the current version instead.
After some reading, it seems to work better.
I don't think that the Kobos are utilizing the Nook code anyway.
But in the normal version, although it has the same settings with the NST version, some backgrounds are not displayed properly.
So, I modified the apk to use a 'light' theme, and now it looks exactly like the NST version but without the drain.

P.S. I uploaded the apk here for anyone who wants it.
I don't know if its against the forum rules.
If it is, I'll take it down.