Well I fear that: the color to b&w conversion is a bit tricky...
I don't know if with some specialized reader software something best can be obtained...
- For fisrt cbz and cbr as to be recognized as"Comic" format non a simple image archive
- The first image must be opened automatically
- The top and bottom bords must be cropped
- ...and finally if it's colored must be downscaled to black&white (with a better algorithm that that actually used)
A lot of operation and I fear the CPU is not so powerful to do this on the fly
