Viewer - color depth - unify Dithering options

[user0]

XnViewMP 1.7.1 64bit
Windows11 (23H2), display resolution 3840x2160, win scaling 150%

Viewer - color depth
Dithering options are different for Indexed colors and Grayscale in 'Change color depth...' and 'Export...' dialogs

color_depth_unify_dithering_options.png

Suggestion

• unify Dithering options for Indexed colors, Grayscale in:
  - Change color depth...
  - Export...

Example

• GIMP
  gimp_dither.png