Once I have opened the Highlight Window & shoved it off to the right, it appears coincidentally either as
1) a wide box with 2 columns,
like 4 colors on left (up & down) & side-by-side 4 colors on right (up & down) (thus I have 8 colors in 2 columns of 4 each);
2) a narrow box with 1 column,
8 colors up & down in 1 column.
However, I don't know what causes these box shapes. I prefer the 2nd variety, but don't know how to get it when I want it.
How Can I Configure the Shape of the Highlight Menu Window?
(BTW, it would be nice to dispense with the mouse/window process & use a keyboard shortcut to highlight colors by number. Going back & forth to that window takes time).