Apple is working on three different color options for the launch of its much-rumored 4-inch iPhone, including a version closer in hue to a hot pink iPod than rose gold, a report said Friday.

It appears Apple's so-called "iPhone 5se" might see further differentiation from its iPhone 6s and 6s Plus siblings than expected, as Japanese website Mac Otakara reports the company plans to market the handset in a new pink chassis color alongside the silver and Space Gray options currently available for iPhone 5s.

In its report, the publication cited unnamed third-party accessory manufacturers exhibiting products at the recent Tokyo International Gift Show expo.

Sources describing the color compare it to a pink sixth-generation iPod touch or seventh-generation iPod nano. While the exact hue remains open to interpretation, the new pink tone is markedly different than rose gold options available for iPhone 6s and 6s Plus, these people said.

The report is unclear on the prospect of a yellow gold iPhone 5se version, meaning those interested in an updated 4-inch handset might be limited to silver, Space Gray and pink. Apple first introduced gold as an iPhone 5s option in 2013, developed in part to satiate Chinese market demand. The gold color jumped to other product lines including Mac, while its success spawned a rose gold variant that launched with iPhone 6.

Production of the next-gen 4-inch iPhone is supposedly underway ahead of a rumored spring announcement. Details are scarce, but the device is said to boast a metal-backed design similar to the current iPhone 6s with refreshed internals like an A8 or A9 processor and NFC support for Apple Pay.

Most recently, a photo popped in January purportedly showing the unreleased 4-inch iPhone in comparison to an iPhone 5s. If the image is legitimate, Apple's small format handset borrows heavily from iPhone 6s, with curved edges, a sloping "2.5D" screen and a front-facing camera shifted to the left of the ear speaker.