First of all, I apologize, since I am using Google Translate.
I would like to know if it is possible to create a macro when using the color change function, which displays a message on the screen with the new color to be entered.
For example, in a two-color piece (black and white), once you have finished using the white color, a message such as: “enter the color black” appears on the screen.
My knowledge is very limited, but I think it’s a good idea and I’m sure there are talented people who are capable of doing it.
If I’m understanding what you want to do, you can probably do it in the slicer without the need for a macro at all. I think Prusa Slicer and its derivatives (and possibly Cura too) have a field for a filament’s color. Assuming you’re already configuring your slicer with something like toolchange or filament change gcode to facilitate manual filament changes, you can add a M117 line there and include the proper placeholder/variable based on your slicer to inject the new filament color into the message text string.