Changing color just of a fraction's line

Questions
1 
#let cc = text.with(fill: black)
#let oo = text.with(fill: orange)

$
oo(cc(a)/cc(b))
$

^^^ Any better way to do this? ^^^

2

#show math.frac: set text(orange) gives the same result, so I guess a more hacky solution is necessary:

#show math.frac: set text(orange)
#show math.frac: it => {
  show regex(".+"): set text(black)
  it
}

$ (sigma A_1) / (delta b^2) $

image
image117×119 3.21 KB

1 Like
3

Cool, useful if you need all your fractions to be that way actually. I will stick to my method for now as it was just a one-off.

4

To do a one-off:

#let oo(body) = {
  show math.frac: set text(orange)
  show math.frac: it => {
    show regex(".+"): set text(black)
    it
  }
  body
}

$ oo((sigma A_1) / (delta b^2)) $

#oo($ (sigma A_1) / (delta b^2) $)