Orange chromide vs. RED chromide
Something has happened in the last 15 or 20 years that is causing great confusion. Red Chromides are now being called "Orange Chromides" in many fish stores.
When I had the wild type of E. maculatus in the 90s, it was called the Orange Chromide. It was only really orange in breeding colors; the rest of the time, it was basically silvery-grey-green with black splotches and lots of rows of tiny orange dots. If you didn't know about the REAL Green Chromide (E. suratensis) - and most PetSmart fish department clerks don't - you'd be quite likely to think that the wild type of E. maculatus WAS the Green Chromide. But it's not - it's the Orange Chromide.
There was also a widely-available amelanistic or xanthic (not sure which term is the right one in this case) domestic variety of E. maculatus. In the literature prior to the 90s, and generally in the trade, this version of the fish - which has an orange base color all the time, not just when breeding - was called the RED Chromide. The Red Chromide is somewhat analogous to a Pink Convict - it's a popular domestic strain with a lot less black pigment than the original, wild type.
In recent years, though, it seems that the wild-type E. maculatus - the original Orange Chromide - has become very scarce in the hobby, replaced almost entirely in LFS by what we called the Red Chromide in the 90s. And since the Red Chromide is really more orange than red (Metriaclima estherae, anyone?), and the wild-type is hardly seen anymore, LFS are now labelling the domestic Red Chromide as the Orange Chromide.
Bottom line - if you have the old-school, wild-type Orange Chromide, you'd show it in the appropriate wild-type class. If you have the light-orange, domestic "Red Chromide", THAT fish would show as an Old World ornamental.
There is a place in the show for either variety E. maculatus, no matter what. And if you've seen both, you just can't confuse them. If you're not sure, most any cichlidiot whose been around a few years can help you figure out which one you've got.