If you mean the scaling of icons done by Billboard, I have already fixed that here locally and it will be part of the next release (instead of scaling embedded images and icons, they will have their original size and be centered vertically).

If you mean the lack of color shades in the low power mode screen, that's a hardware limitation, although it can sometimes help to set the "Color Profile" (Settings - Device - Display - Color Profile) to "Vivid" (this is also needed to get pure green to display correctly/at all, at least on some devices).