I've got a few books that Ubooquity displays with incorrect colors. These are all archives with png files with the IHDR color type set to 6. Png files with color type 2 display correctly. Here's a screenshot showing the bad colors. Left is png color type 6 and the right is color type 2. The incorrect colors are present when opening the books to read as well. And thanks for Ubooquity. It makes reading digital comics from my library on my tablet quite easy.
Customer support service by UserEcho