Palette actions menu

The palette actions menu contains stuff that pertain to palette operations.

Generate optimal palette with x amount of colors
Allows you to generate a palette using what is on the tilemap (works with blocks just as well).

Clear entire Palette
Will set all palette entries to black. If you change your mind depending on when you change your mind you can either press No or press CTRL+Z

Pick nearest color algorithm
Retro Graphics Toolkit supports a verity different nearest color algorithms. Try them all and see which looks best.

RGB color to entry
When in the tile editor you can use the RGB sliders to select a color and using this option will convert that color to the closest color that can be displayed on the current system and put that in the currently selected palette entry.

Entry to RGB color
Opposite of above. Will get the RGB values for the current palette entry and set that value to the RGB sliders.

Sort each row by
Sorts each palette row based on a certain criteria. For example when one selects lightness the darkest color will be the first color in the row and brightest color will be the last in the row.