1) There are such things as rainbow carrots. That was terrible English. Feel free to use purple, yellow, or white carrots (not parsnips, although I'm sure they'd be yummy) in place of orange ones for this recipe! Your soup might have more of a brown colour, bit it'll still taste the same - and it'll have the added benefits of different phytonutrients!
2) You don't have to have a big, powerful Vita-mix to make cream soups - we use a little Magic Bullet. A potato masher also works, although it'll be chunkier.)