You could incorporate these aesthetic choices with some variable work and on-page variable magic. It will take a bit more effort though and some reading up. I'll link those articles below. This one helped in particular.
I wouldnt advise you to make these choices meaningless though; readers will know and will comment on it.
Or you can skip all these appearance choices all together if they don't matter to the plot which is frankly the easiest thing to do.
I wouldn't bother. There are some sites where people really like that sort of customization, but people here generally prefer distinct narrators to customizable one.