Secondaries with the Pros - The Art and Technique of Digital Color Correction - page 238

Do the contrast and the basic feel first. It doesn't matter who you're
with or where you're at; people are going to enjoy the image a lot
better once the primaries are balanced, and you're in the ballpark
where you need to be. Then you can start playing in the secondaries,
Fig. 6.51 Source image courtesy of Vanderpool Films and Charles Vanderpool.
Fig. 6.52 Scopes showing source image from Tektronix WVR 7100. Upper left is YRGB Parade. Lower left
is vectorscope zoomed in 5x. Upper right is composite waveform. Lower right is a vectorscope at standard
zoom.