Can you add color and/or dropdown input support for custom blocks?
Color input will be the same thing as in <touching []?> (color).
And the dropdown will make you add options as a list and you will be able to do things based on which option is selected using if/else.
options... lets you make a custom dropdown menu, read-only makes it read only, like, you can't type anything in the input. menu is a bunch of special menus that let you make menus
it is actually possible to put a color picker in a custom block (ok, it's possible to put any input in custom blocks), but it's very hard to work with.
I agree that a color picker should be one of the things you can put in an input slot. It should give your procedure a three-item list of RGB values (0-255).
Dunno how high that is on the priority list. Jens has colors on his list of things to redo someday. The key word there is "someday."