How to Make the Black Dock on the Black Background without Jailbreak-iOS 10

Postscript March 28, 2017 JPN
Dock and folders black again in Plus series on iOS 9.3!?
＞ Magic Black Minus + α

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Postscript December 3, 2017 JPN
It does not work on iOS 10.2.
I prepared a new black wallpaper for 10.2 on iPhone SE/5s/5c/5/ iPod touch 6/6s/6. It is probably impossible for 7/6s/6/7 Plus/6s Plus/6 Plus.
＞ Magic Black Minus for iPhone SE/5s/5c/5/iPod touch 6 (and iPhone 6/6s)

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It is the perfect black Home Screen!

This wallpaper makes jet black Dock and folders. Probably, it works on all the iOS 10 device. So suited to the new color iPhone 7 Jet Black (or Black)! Is it an Easter egg?

On the normal black wallpaper.

If you use normal black wallpaper, Dock and folders are gray. I don't love that.

How to set up

Update to iOS 10 your iOS device (iPhone 7/6s/6/7 Plus/6s Plus/6 Plus/SE/5s/5c/5/iPad pro/iPad Air/iPad 4th or later/iPad mini 2nd or later/iPod touch 6th). November 6 JPN: It may not works on iPad.

Go to this page ▶︎ Black in Black | Mysterious iPhone Wallpaper
Tap and hold to save the black image and use as wallpaper. That's all! You'll get the jet black Home Screen!

Adding that page to Home Screen gets the black blank icon.

This is a sample.

Notes

Keep OFF "Reduce Transparency" (default).​​​
If Home Screen and Lock Screen both black it might be better to choose "Set Both". If they display the same, sometimes Home Screen wallpaper is changed to Lock Screen one (Lock Screen takes priority.), even these have different size or margins for Parallax Effect.
It is better to set as "Still". The background never moves.

On this wallpaper, "Edit" button of the widget is invisible but you can tap to edit.

Postscript, October 26 JPN
A user told me how to see the Edit button on Black in Black Home Screen.
Pull down Notification center → Swipe right

Why they are black?

Black in Black is 1×1px image (For sure, It's just a dot, cannot say I made. I named it. I named the hack I found. Don't mention it.).
On 1px width and/or height wallpaper, the color of Dock and folders are the same as the original in iOS 10.
For example, using 1×1px white, Dock and folders are pure white.

Look the screenshot, Safari/Photos icons or the folder in Dock. The borders are invisible. They are certainly white. Meanwhile, the background is darkened.
This rule applies to any color.

But nothing is darker than black. The black background still black. Folders are rounded on the other colors, but on black, they are invisible.

You can make trial the other 8 colors. → Mysterious Wallpaper Lab

There are impossibly vivid colors to make clear the effect. Of course you can use as wallpaper if want.

All the image is a PNG. iOS 10 (9.3.4 or later) doesn't read 1×1px JPEG (iOS 8–9.3.3 read.). The storage? 1×1 black JPEG is 285 bytes (compressed), PNG is 83 bytes. It is often light a simple picture.


The other wallpapers using this trick

Color Trends Dock Fall 2016
It makes the Dock and folder color collect.


How I found this

The prime concern of me was how works Round Folders in iOS 10. I tested Round Color Folders "black and red" (3×3px) on iOS 10 iPhone 6 Plus.

The screenshot iOS 9.3 iPhone 5.

The Home Screen background blacked out!

iOS 10, 6 Plus

Why black? Wrong setting? I know the background is darker than iOS 9.3, the blur effect is stronger. But... Why here isn't any red?
It's black!!! This is not the time to say "Not red"! I find the perfect black!?

However, on iPhone 5 (iOS 10) this.

iOS 10, iPhone 5

Hmm it's 6 Plus only? If the small size image made the black...

iOS devices have different thresholds of wallpaper in depending on the display size, etc. Then I tested various sizes and colors. It works on iPhone 5 on 1px width and/or height black. Also 6 Plus. (According to my own experience, probably it will work on other devices. Sep.16 Checked on iPhone 7/7 Plus.)

Success in 5!

Why Round Color Folders "black and red" worked like that on 6 Plus? 6 Plus has a larger threshold (5px height or smaller!), perhaps the red was vanished by strong blur effect of iOS 10.

Too strong blur effect on 3×3, iOS 10, 6 Plus.

In iOS 8.3–9.3 and the future

In iOS 8.3–9.3, using 1px width/height image, Dock color was always dark gray (R77 G77 B77, the same as using normal black wallpaper) on any wallpaper. The background is never darkened.

iOS 8.3–9.3

It looks fixed in iOS 10.

iOS 10

Well... It is hard to find a new trick in the same place.

In the future? The history of the 1px wallpaper effect, iOS 7.0-7.1: It could not set to wallpaper (App crashed), 8.0-8.2: Folders were pale blue tone (I vaguely remember Dock had a dark color also on 1px.), 8.3-9.3: these were gray tone and the background was never darkened on any color, and 10: the background is darkened on any color but Dock and folders are the original color. It has been changed three times since iOS 7.
Kaleidoscopic changes? But technically speaking, iOS changed seven times wallpaper effects since 7.0, iOS 7.1, 8.0, 8.3, 9.0, 9.2, 9.3, and 10. That is actually stable. Only three times!

If anything will be changed, I will postscript my site and here. Have a nice screen!