Can I control addresses with a fader?

There may be a way to do exactly what you are saying. However, I think it's easier to do what I think you really want.

Eos software focuses on the function rather than on the DMX address. That can be quite a mental leap if you have spent much time on older consoles. So, assuming I understand you, the goal is to put a color on a fader. Somewhere there is step by step instructions by ETC, but I can't find it right now.

Here is what I do (there are always many paths):

1. Record a Submaster with just the fixtures in the color you want. eg Amber at full, all else off.
2. Edit that sub (sub, sub, [edit]) Make sure it's a Proportional, HTP sub.
3. Clear any value other than the Amber parameter. Don't set them to zero but erase the entry with @enter.
4. You can keep the intensity, or not, depending on just how you want the sub to work. Try it both ways and see what you like best.
5. You can make this LTP sub to change how it overlaps with other subs and cues. Again play with it.
6. You might also want to set the 'home' values for the colors parameters to 0. I prefer to set a 'home preset' in Setup. This will allow an HTP sub to control the color when nothing else is running. The default 'home' value for color is full, so that you just need to bring up the intensity, but that isn't always the best way to handle colors.

I've often set up a bank of faders with all LED colors and an intensity master for cyclorama washes. This allows hands on color mixing with those faders. High schools and church group find it's very popular with the less skilled.

There may be a way to do exactly what you are saying. However, I think it's easier to do what I think you really want.

Eos software focuses on the function rather than on the DMX address. That can be quite a mental leap if you have spent much time on older consoles. So, assuming I understand you, the goal is to put a color on a fader. Somewhere there is step by step instructions by ETC, but I can't find it right now.

Here is what I do (there are always many paths):

1. Record a Submaster with just the fixtures in the color you want. eg Amber at full, all else off.
2. Edit that sub (sub, sub, [edit]) Make sure it's a Proportional, HTP sub.
3. Clear any value other than the Amber parameter. Don't set them to zero but erase the entry with @enter.
4. You can keep the intensity, or not, depending on just how you want the sub to work. Try it both ways and see what you like best.
5. You can make this LTP sub to change how it overlaps with other subs and cues. Again play with it.
6. You might also want to set the 'home' values for the colors parameters to 0. I prefer to set a 'home preset' in Setup. This will allow an HTP sub to control the color when nothing else is running. The default 'home' value for color is full, so that you just need to bring up the intensity, but that isn't always the best way to handle colors.

I've often set up a bank of faders with all LED colors and an intensity master for cyclorama washes. This allows hands on color mixing with those faders. High schools and church group find it's very popular with the less skilled.