This is my bibliography:

When you click the link, it makes this color:

enter image description here

The table of contents also does this.

enter image description here

What is this functionality? How can I change the colors?



Ok. I've been looking for answers and for now this is what I know:

-The colored boxes around urls and links in the same document are standard, unless we specify hyperref to disable these colors.

-Therefore it must be a problem outside my control (i.e. compiler, packages...) if they do not appear in the final document.

-The arguments of the package hyperref can be altered with \hypersetup{} at any time inside the document. So this can be used to draw red citation boxes in the middle of the document and then at the end make the citations another color.

  • 3
    Sounds a bit like this would suit better as an edit to the question. (Answer posts are, unlike a normal forum, reserved for solutions to the problem posed in the first post, so additional information should rather be edited into the question, instead of posted as an answer.) No idea really what would cause this, but does the same thing happen in all PDF viewers? – Torbjørn T. Sep 28 '19 at 17:38
  • Only with desktop, full fledged PDF viewers I can see the rectangles. Browsers or lightweight PDF viewers tend to not display them. I've read that boxes surrounding PDF links are likely to be ignored by most of the viewers, so, that is not longer a reason to be concerned. – dmz Oct 1 '19 at 0:38

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