Answers to your questions:
1. According this: www.se.com/my/en/faqs/FA308725/ you can setup Holding coil with offset 0 (or 1) to read %M1. Or maybe Holding register with setting up Binary read and bit number 0 or 1.
2. Unfortunately it's not possible to mirror graphical object.
3. To use background image you can use Image object from Simple objects library and expand it over the whole screen and lock it.
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