Currently generates planets orbiting around a yellow star (Balastrackonastreya), which may explain the overabundance of planets with yellowish tints. Not all planets are generated with 100% accuracy yet (in fact, I'd be surprised if *any* planet is generated with 100% accuracy); the buttons are color-coded to indicate accuracy.
Tested only on Chrome. May not work in other browsers. If no planet appears when you hit a button, you know something is wrong.