Sometimes the name will emerge on its own. My blue road bike was named after I saw a photo of a wildflower of the same hue- the Latin name of the flower is Veronica, the common name is Speedwell. So - Veronica Speedwell. When I got my touring bike, it was immediately clear that her name would have to be Betty. My husband had an old steel Specialized that had not distinguishing marks- we used to call it "the stealth bike". Then he got the bike built up from a Russian titanium frame- it acquired the name "the imposter". So give it some time....