Enter HEX color codes without hashtag in color picker from the tiny menu bar
In the color picker in the regular design panel on the right you can put in a color HEX code without any hashtag. The # is set per default in front of the number.
But in the color picker you can access directly over for example a text box (the appearing tiny menu bar), you have to put in the hashtag in front. This is somewhat confusing for people, who don't know that.