Wikileak:
It works even though it doesn't work.
While the display of colors in the pop-up menu is broken under Mac OS X 10.9, the palette is still there and works for setting colors. Choosing the first blank spot in the Color pop-up menu sets that first color in the palette, choosing the second blank spot on the Color pop-up menu sets the second color in the in the palette, etc. Of course, this was sooooo much easier when the Color pop-up menu displayed color swatches as expected.
If you click the "Edit Palette" button at the bottom, the colors in the Edit Palette dialog box from left to right correspond to the Color pop-up menu from top to bottom. So, the color in row one, column one of the Edit Palette dialog will be the first blank in the Color pop-up list. The color in the row one, column two will be the second color in the pop-up list and so forth.
I set the colors for a title in the Edit Palette and take a screen shot, then reference that while using the Color pop-up menu.
If your machine will boot 10.7.5, an alternative is to create a startup volume just for setting the colors and switch to 10.9.5 for finishing the disc.
-Warren