In case of LED color I was thinking about something else - like it is implemented but with option to set LED color (green, red, blue, etc.). So before you place LED component you can select it color and then in circuit for e.g. it is dark red or green or whatever color you can pick and when on light red, green, etc. Something like standard LED.
There is a little bug - when you place buttons in a column label from other button is overlay button and it is hard to click on a button because it will open edit label dialog, maybe label should be on the left side of button?