This used to work a while ago, but now it only works on horse’s page: that the ancestor which appears more than once in a pedigree is highlighted in bold. For example, my filly Natalma is 2x2 inbred to Jazz It Up, and he is in bold on her page but not on her “Hypothetical mating” page.
Or maybe these ancestors could be displayed like on pedigreequery where, for example, Tapit is 3x4 inbred to Mr. Prospector and it’s marked in blue, and he’s also 3x5 inbred to Nijinsky marked in orange.
Or maybe these colours are random because now they’re different… 