Again apologies for poorly organized responses: I just want to point out, in case it's not redundant, that all the colors of the rainbow are composed from three colors: Blue, Yellow, and Red. Blue plus Yellow generates the Greens, Blue plus Red gets the Purples, Yellow plus Red gets the Oranges, etc. Take away on of those three - blue, yellow or red - and you can't get any of the related combination colors. This is why color printers have four cartridges: Cyan (blue), Yellow, Red and Black. This makes it extremely strange that Office has eliminated one of the pillar colors.

And Yellow is, again, the most popular highlight color on the planet, even outside full palette needs.