IPhone was first, but so was Motorola
ries.typepad.com
ries.typepad.com
Essentially, they've stuck with the same model they had previously, of discounting the older model, and introducing a new model at the same price point the older model had, but this time they gave the older model a colored back.
So they really should have stuck with iPhone 5 (which is now available in colors) and iPhone5s, might have been less confusing than the idea of a now 'cheap' iPhone, and 'c' I think is being recognized as 'cheap' rather than 'color'.