L'Oreal Gold Imperial is a moderately warm-toned, medium gold with a metallic finish. It is a limited edition eyeshadow that retails for $7.99 and contains 0.12 oz.
L'Oreal Gold Imperial Infallible Eyeshadow ($7.49 for 0.12 oz.) is a metallic, yellow gold. There's a slightly subdued quality to the overall color--by a little brown--that keeps it from being a yellow/orange kind of gold. This is why it's not the same as L'Oreal's Eternal Sunshine,, though if you rarely wear gold, one will do; or, if you find that Eternal Sunshine turns orange-y, you might prefer Gold Imperial. Chanel Apprence is browner. Urban Decay Blitz is very similar--less metallic. MAC Sweet & Sour is yellower.
FURTHER READING: Formula Overview, which is a detailed review of the range as a whole.