LOS ANGELES — They don’t call them small-screen goddesses for nothing. After all, these ladies know how to walk the red carpet in style. At the 54th Annual Primetime Emmy Awards, the best and brightest of TV went for an ethereal look in rainbow colors, lots of chiffon and soft ’dos. Oh yes, then there was the shine of all those jewels. Here,Jennifer Garner of “Alias” in a Ralph Lauren column and Neil Lane diamonds.