I think the servos don't have a special skintone, just a special outfit. it's possible they have a skintone too, but even if you changed that the outfit would prevent them from looking like a human.
you should be able to have a communal kitchen. The only reason I can think of that you wouldn't be able to place any buy mode object in an apartment building is if you already have a family in there, and then I think using cheats, probably "moveObjects on" though it may be "boolProp aptBaseSpecificToolsDisabled false", you'd be able to put objects in the communal area.
If you don't have any families in the apartment yet, then I'm not sure what the problem is. What's preventing you from putting a fridge, oven, etc. in the communal kitchen, because you should be able to.
while Blizzard is selected click on a newspaper or a computer and click "find a job". you'll get three or five (depending on whether you clicked the newspaper or the computer, the computer gives you more) career options. continue this each day till a job in the cooking career shows up.