Galaxy Tab S2 went into negative display!!!!

[phone and tab]

Need help!!
I saw a similar thread but it was on Galaxy phone. But, in my case, it is a Tab S2. It went into negative display when I was setting up 360 Security App. For the life of me, I have been looking into setting on both my Tab and the App setting for the past 2 days. None whatsoever could be found.
BTW, the Tab setting>accessibility>, has no box for reverse display setting. It gives me headache to look at the black background.

Thank you anyone who can help.
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2016-09-01

Posts2 Posts
Well, I found the solution after a good sleep.
I went into setting>accessibility>VISION>then scroll to the BOTTOM, and found NEGATIVE COLOUR. toggle it ON and OFF.
My headache is now gone!!!!

 

[belodion]

Have you tried Safe Mode?

 

[phone and tab]

Thank you. I found it.
"Well, I found the solution after a good sleep.
I went into setting>accessibility>VISION>then scroll to the BOTTOM, and found NEGATIVE COLOUR. toggle it ON and OFF.
My headache is now gone!!!!"

Since I just joined the chat group yesterday, I had made a terrible booboo in offering this answer inadvertently to an unrelated question by picking the wrong tab.
Please consider this as my newbie public apology.

 

[belodion]

Glad you fixed and welcome aboard.

If it's any consolation, I just spent ages trying to add a screen lock PIN to a Lumia, phones with which I am familiar. In the end I had to research it online. It's something now rather hidden and not obvious in the settings.