Stupid Photoshop glitch

[SA Dashie]

Check out the attached image.
I was practicing shading in art class on one of the school laptops with my tablet in Photoshop CC.

It turns out that the different shades of gray turned into actual colours.
Maybe I pressed something I shouldn't have? Lol.

It did say an error when I was using the quick colour picking tool (control + alt + command + click) and said something about only having green (dnt rmmber dtals).

 

[Moy]

Maybe try to press the numbers in the numpad. I dunno, I'm not on the computer right now. But try it

 

[SA Dashie]

Don't have a numpad on the Macs.
It got applied after I deselected the layer.

Not really important, just something interesting, although doubt it will happen again anytime soon.

Edit:

Re-practice

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