There are various programs that allow you to create skins or text modifications for the Meizu M6 miniPlayer. These programs let you replace existing images from the original firmware with your own, and also modify the text if necessary.
For more information, discussion and instructions, check out these threads:
ResourceEditor 1.01 (Chinese program, thread contains instructions for non-Chinese) and
miniPlayer Resource Editor 1.0 (English program, requires outdated .
NET Framework 1.1).
New Resource Editor 1.01 in English works for the Meizu M3 too!
[software] Resource Editor 1.03 | Meizu Me