Color citation content but not brackets

[TheZoq2]

Several papers add colors to the citation numbers, for example:

I'm trying to get the same effect in typst, but I can't figure out how. The closest I've got is with #show cite: set text(fill: purple), but that also colors the

brackets around the numbers which I don't want.

I found some old threads here that say you can show link: set text(fill: purple) or similar, but that has no effect.

Is there a convenient way to do this?

[EpicEricEE]

Something like this should work. As cite elements are also references, you need to exclude them when coloring other references, so you don't end up with differently colored brackets:

#show cite: it => {
  // Only color the number, not the brackets.
  show regex("\d+"): set text(fill: green)
  // or regex("[\p{L}\d+]+") when using the alpha-numerical style
  it
}

#show ref: it => {
  if it.element == none {
    // This is a citation, which is handled above.
    return it
  }

  // Only color the number, not the supplement.
  show regex("[\d.]+"): set text(fill: blue)
  it
}

...or alpha-numerical with regex("[\p{L}\d+]+")

[TheZoq2]

Oh using regex there is clever! Thanks