Could you explain what non invasive methods exist? Really would like to hear them.

Phenolphtalein ist ein Farbstoff, der seine Farbe mit dem pH-Wert (Säure/Base) ändert. Im Wort wurde einfach “tal” mit “berg” ersetzt.

I really love this. So so beautiful to see what everyone did~ Because of the feddit.de pixels I can see exactly what I did ^^ Most of the time I worked on the trans flag and feel happy and proud about what I was able to do. A wonderful event and I’m excited about next year~

this was so much fun~ Because of everything that happened on reddit I wasn’t able to enjoy r/place much. So I am really happy that it happened here and it gave me a reason to finally create an account ^^ I feel proud for what I was able to do on the canvas and also happy how the canvas turned out. I’m excited for next year~