Look, those little baby cubs are bigger now! They both have qualities of both their parents, but overall they've retained Sarabi's (not sickly and evil) look.
-The son has a brownish pelt, scar's facial markings, and "ringed ears".
-The daughter has a somewhat orangish pelt with Scar's darker eye markings and "ringed ears".
And this is before Scar just totally destroys the Pridelands. (It didn't just happen over night you know! Simba was gone for years, not days. X'D)
And no, Sarabi does not let Scar near his children. She doesn't want him to influence them because he's a butthurt lion who is delusional about his status. :I
But she does love her babies either way. They fill the void that was Simba.