Phones of every color of the rainbow (pictures)

At the dawn of the smartphone era, serious smartphones were black or gray and "stupid" phones got the bright hues. These days, splashes of color liven up portfolios of black, and metallic silver and gold.

LG's G Flex 2 is resplendent in a shiny red coating that also claims to self-heal when scratched.

The high-priced Tonino Lamborghini 88 Tauri dresses up its red calfskin leather look with stitching and metal accents. It also comes in navy blue.

As arresting as a traffic cone, the Microsoft Lumia 640 grabs your attention. It also comes in cyan blue and the more sedate white and black.

"Eggy" is the name LG attached to its yellow version of the adorable Aka, the first smartphone whose digital eyes reveal its backstory and personality.

The LG G3 is only one of many top-tier smartphones that include metallic gold as part of its lineup. We're pretty partial to the brushed-metal look.

We realize that "wood" isn't a color, strictly speaking. Nevertheless, these unique Moto X (2014) finishes separate your phone from the herd. The Moto Maker website gives you dozens of options for color-customizing the backing and trim.

If you're lucky enough to live in a place where you can buy the emerald-green version of the Samsung Galaxy S6 Edge, its shimmery backing adds depth when the surface catches light.

A soft-touch finish on theGoogle Nexus 6's blue backing gives this supersize handset a richer personality.

Blending into the blue wall behind it, the 5.7-inch cyan Microsoft Lumia 640 XL boldly carries on the signature Lumia color, along with eye-searing orange and black.

Samsung's jewel-toned Galaxy S6 is this confection in topaz blue. Most markets will sell the phone in gold, white and black; this splash of color is an outlier for select markets.

Remember the LG Aka from earlier in this slideshow? It's also one of of the only pink smartphones we've seen in a long time. LG calls this one Yo-Yo, by the way. Why? Read up on that here.