What do you think the hybrids will look like?
Depends on what type of species the "albino zebra" is (the fry are not likely to be albino, unless the yellow lab also carries that recessive trait).
Red zebra x yellow lab crosses look like a mix of both species. More yellow than red zebra's but more orange than yellow labs. They may have some light striping and lack the black fin markings that the yellow labs have.
The mouth structure (and dental pattern) will be different from that of the parents (zebra mouths are structured for algae-grazing, yellow lab mouths are structured for capturing small aquatic crustaceans).
Most m. estherae x l. caeruleus hybrids look like this:
http://www.wetwebmedia.com/CichlidPIX/100_0128.jpg%20yel%20lab%20not.jpg
but since most of the "albino zebras" I've come across are albino metriaclima greshakei (non-albino "ice blue zebra's" which are light blue with red dorsal and caudal fins, but start off a drab brown), there's may be no telling what yellow lab x ice blue zebra progeny will look like.
Temperment-wise zebra x lab hybrids are apt to be more aggressive than the generally mildy aggressive labs yet less aggressive than zebra's.
This hybrid will be prone to breed with any zebra, lab or zebra-lab hybrid in the tank. If you ever plan to breed zebra's or yellow labs (which are more desirable to hobbyists than mbuna hybrids will ever be) then their presence in the tank will definately throw a monkey wrench into that effort.
...give a few to a friend whose has been wanting to start a mbuna tank...
The dissemination of hybrids is usually frowned upon in the hobby.
