Is this what you are trying to link to?
Here is a sample of the two PPG "persian oranges". PPG does not make a distinction as to "#1" or "#2". The 60080 is closest to "#1", so called. The "#2" has more red in it. The sample part is the lower V-belt guard from my '42 B belly mount sickle mower. The original paint in the middle was scuffed with 400 grit paper to clean the old surface and try to show the original color as best as possible. You will note that the lighting makes a noticeable difference in the perceived shade, even across the same sample. Both the PPG numbers are OMNI acrylic enamel.