I've reduced the amount of blue in the midst of black by enabling the link only first instance filter. It's not my ideal solution, but it will have to do for now.
Another problem I've noticed is that when only the first instance of a concept is linked, other instances further down the page, such as headings, which you might like to link, cannot be linked. It's either every instance or only the first instance so far. I wonder if it would be possible to have, someday, a force autolinking button to go with the prevent autolinking button, so that additional instances could be linked if desired.
A possible workaround in the meantime would be to disable the link only first instance filter and use the prevent auto linking button to suppress instances you don't want linked. I assume whole sections of text can be prevented from linking in one fell swoop. Not elegant, but probably feasible.