The colors our parakeet pairs produce are typically the normal-barred mutations and are either green, yellow and black or blue, white and black. Our pairs do produce other colors and/or mutations but not so often.
If you are looking to obtain a certain color and/or a certain sex, or possibly visiting to meet the babies, play with them and take one home the same day, we might have some issues. There is such a demand on our hand fed baby parakeets that they are normally placed on hold within minutes of us updating the website on Sunday evenings.
For the health of our breeding pairs, we do provide them breaks between clutches. Since we have so many pairs, this allows us to give a pair a break while another is actively breeding. If there are no babies at this time, there are certainly going to be more coming in a short period of time.
The question of one or two parakeets is a question we actually get quite often and here is our feeling on it... Like humans, animals like to have companionship of their "own kind", but they can survive just fine alone too as long as they have some sort of companionship, whether it be from a human or another kind of animal. We do not believe they make better pets when they are alone or with a companion... Each bird is different (no matter the sex, not matter the age, no matter whether hand raised or parent raised) and some like to sing/talk and some don't, some like to cuddle/kiss and some don't, some like to be held and some don't, etc. You just never know what your particular bird will do or won't do. With that said, we often tell people to start out with one parakeet, giving you time to adjust to having a bird in general, and learning all the quirks that come along with that. It also allows for the bird's personality to come through and if it is felt that it needs a companion of its own kind, another can be added later. It is not hard to add a second at a later date as they typically accept them with open arms, that is after "who is in charge" has been worked out. Yes, they will bicker from time to time but that is normal, no different from human children.
Because you work or go to school the majority of the day, is it unfair to only have one? Honestly, no. Like humans, birds like their alone time too and will normally use this time to sleep or play with their favorite toy. If you wanted to give them the feeling that they are not alone, you could always leave on the radio or tv. Or, you could put a mirror in the cage when you are gone and that helps to make them believe that they have a friend with them.