We have the Painted Bunting! It couldn't decide what color it wanted to be so it chose all of them.
Oh hey, that looks a bit like the rainbow lorikeet:

Kind of a bit similar to the Gouldian finch, too:

I guess the splendid fairy-wren doesn't really compare 'cause it only comes in blue and black:

Oh, rainbow bee-eater, don't you think you're over-doing it a little?

No, I said rainbow bee-eater, not rainbow pitta!

Hey, golden whistler, what are you doing here?

What? Eastern spinebill? Don't be silly, nobody's talking about you, you don't even have any blue on you:

Oh, what? Sorry America, I couldn't hear you over the sound of all Australia's awesome birds.