My first real "rant", okay...

So I decided today to hop back on the horse and open Android Studio for the first time in a couple months.

I decided I was going to make a random color generator. One of my favorite projects. Very excited.

Got all the layouts set up, and got a new color every tap with RGB and hex codes, too. Took more time to open Android Studio, really.

Excited with my speedy progress, I think "This'll be done in no time!". Text a friend and tell them what I'm up to. Shes very nice, wants the app. "As soon as I'm done". I expected that to be within the hour.

I want to be able to save the colors for future reference. Got the longClickListener set up just fine. Cute little toast pops up every time. Now I just need to save the color to a file.

Easy, just a semicolon-deliminated text file in my app's cache folder.

Three hours later, and my file still won't write any data. Friend has gone to sleep. Homework has gone undone. My hatred for Android is reborn.

Stay tuned, the adventure continues tomorrow...

I received this special picture per WhatsApp. It changes its color the first time while downloading and the second time after you tap on it.
It goes from about #ff96e1 to #42000d

(Yes, I know these Thumbnail-Faker but in this case it keeps changing its color even after opening and closing the pic multiple times)

I did not find anything by inspecting it on PC...

Does anyone have an idea how it works?