Hi loquat1,
It comes from the weather and the amount of sun.
My ufti (unknown from the Italian) will ripen anything from green to yellowish to brown to violet bottom and greenish top, to almost full dark, and some greyish.
The more sun the darker gets the skin (normally, because sometimes this is not true).
Yesterday I took a fig from an ufti that was full green skinned but soft and ripe of course and I thought ho! man! this is awful - a real experience . I gently gave it to the wife,
and she reported that figs to be a really good/best one and she didn't share the fig with me :°°°( .
I knew that the fig would be good because it was a bit over ripe but protected and it wasn't bad looking except for the color.