Multicolor - Extruder

The extruder works fine, thats not the problem, but (a support for a second heater in multicolor extruder would be fine, but my heater get the power from outside the radds):

When changing colors I need an option like fillament change in the firmware, but in another way.
- goto x_y(_z)

- change to next used extruder and

- press x mm fillament out (cleaning color)
- ( a cleaning nozzle parameter would be fine - drive with the nozzle over a cleaning pad or such like this)

- go back to position

Is there any way to do that automatically at extruder change?

Here is a suggestion for multicolor extruder support in your firmware:
It's a relatively simple thing (I think so)

I use the colors and mixing tables from RGB and use red, yellow, blue, black and white (set 1 part blue, 1 part yellow for green in best case).
At the Moment I have to write new mixing tables for printing with new colors.

a table or file (colors.h) with up to 256 colors (or more) with mixing tables (like now with virtual extruders) from 2/3-5 extruders (set in the config tool). Then I would give every color a fixed index number, 1- e.g. 32/64/128 fixed color Indexer for better slicer support. Indexer > 256 free color Indexer. I think, then it's easier to integrate a second or third extruder for solutable or electrical filament

Fixed Index for groud colors like red, blue, yellow, cyan, mangenta, black, white. bind the to the 2/3-5 extruders
Fixed Index - fixed color tone with changeable values (M163) for for every fixed Index

Free Index - self made colors

Fixed index ground color - Extruder 1
Color Name (in my case for red in the first extruder)
M163 S0 P1

M163 S1 P0

M163 S2 P0

M163 S3 P0

M163 S4 P0

M16x - I1 (index number)

More information about my multi-color extruder: Thingiverse and look for Sprenger or Multicolor-extruder.

Hope you can help!