The BMP 256 Colors, The amount of Palette Data is much larger than the actual Useful Data

Bug (archived)
1

捕获-BUG2
捕获-BUG2721×709 30 KB

I hope the two can be separated，to create two arrays. Can reduce the size of the palette array。
It can even support BMP Rle8 to further reduce FLASH occupation

2

To save space you can use the indexed options with less bits. They will have smaller palettes.

3

index 16？no~no~no，The number of colors is not enough

4

Can you share the image?

On the screenshot ~50 pixels can be seen almost all of them has 0x00 value.
The last color of the palette if 0xffffffff. So it seems the image is not that color rich.