New to Yaris and Yaris world

[yaris2010RS]

okay, here is the deal, i'm a 18 year old college student in ontario canada. i've saved up all the money i've basically ever made and on october 23rd, put it all towards the 2010 yaris RS. its sick, haven't gotten it yet, still in shipment but soon. i've had a few problems off the bat so far already. first off, big problem, i got the car blue but my gf has already named it blueberry......wtf is that? i need help, what are my options with this? lol. now to my real problems, i have yet to find out proper break in for the brand new car. i'm worried seeing as i'm in canada and its getting cold i have to be very careful with what i do. i am experienced with nitro engines and know how important it is to get them to running temp quickly using heat guns and such to keep engine in good condition. i also run a small cash 100% guarenteed mechanic shop in my garage so i know most of my shit. my last question is what is the proper mpg or l/100 km and how long, on average will a tank last in mph or kph