They are the same as a wild type bourke, just a colour mutation.
Being a neophema species, they sometimes get eye problems but you'll soon notice that. Human anti-biotic eye drops work wonders.
Other than the worm problem that afflicts all parrots, they are an extremely robust bird and, I agree, a joy to have around.
One thing you need to watch with an inside bird is the weight. As long as it has a good fly around the room as often as possible it should be ok. The biggest problem with all companion parrots is obesity, even on their normal diet they fly less as they get older so you may eventually have to consider feeding it daily or a (shudder) pellet diet.
Have you tried chickweed as a greenfood? there are not many birds that will refuse that.
A very little bit of hardboiled egg may be appreciated or a mealworm or two. In the wild they will eat some termites so will do better if a little bit of animal protein is included in their diet.
If looked after properly it can easily live for 20 years so I hope you enjoy a long relationship.