I see! This helps a lot of understanding. So, the overall fugue is modal, where in this excerpt, we are in Eb/D#-moll and modulate to the next mode for the Fifth Fugue. That makes a lot of sense. To add, yes, I did print on American Letter. With the color engraving, I do not think it is good for performance. The simplest answer I can give to rationalize this, is simply to look at what is currently being printed and published now. No Das wohltemperierte Klavier from Bach is going to be color-coded by Henle, Bärenreiter, or Breitkopf und Härtel for the sake of showing the subjects. It is good for pedagogy and analysis, as printed theory books will include such information. However, not for performance. Anyone who has taken 18th century theory and counterpoint can identify that information with some effort. The other thing about it is the perspective. The only time you may even need to include that info is for study of the entire score... So, when it comes to the conductor, are they going to be the only one to see that information? Are you going to format the parts with extra color for when each instrument has the subject? If a judging panel were going to see it, those questions arise and it would beg the question 'why did this composer feel the need to do this?' When it came to multiple rests, when ever the part is playing, yes, please include the individual voice rests if only one of them is playing. However, when both parts are not playing, only use a single whole rest to show an empty measure. Yet, in the score, you still notate 1. or 2. for when that part is playing. This can be correct, however, at the beginning with the clarinets or trombones, if ONLY one is playing, then please show another rest for the other part that is not playing. This only applies on the score and for the entire duration a voice is playing. For the parts, you would format separate documents for each instrument (two-parts for Trombones, Clarinets, etc. - Four-parts for horns). This said. you DO NOT need to write divisi for any other instrument except the strings. Divisi playing can be notated by the 1. or 2. you are using currently, however any other time should be notated by stem direction and rests, NOT the term divisi. If both parts are playing together, then only show one line of music. Why? because the parts will be separated. A conductor will see the different stem directions and know what those instruments are doing. The exception to this is in concert band/ wind ensemble music. That field sees something like 7 clarinets on one part, and in that case, you can just use numbers and a-due (a2.) to show when the parts are together. In orchestral music, not so much.