Sunny and Sky update (still skittish, so blurry pics). So, Sunny is a lutino parakeet, lacking melanin like an albino, but has the yellow pigment, thus solid gold. This means the cere won't turn bright blue if a boy, it looks a bit lavender, so we're guessing boy. Sky, the blue one, is a yellowface opaline, and maybe also male. His yellow pigment also put a splash of green on his wee little rump. If I bred him with the right female, I might get the "rainbow" mutation.
#birb