I fix PCs for a living.
At a customer last night run Vista or Win 7 when you installed Google Chrome it forced you to choose a theme and NONE of the themes was a plain white background. Which my customer did not like but let it pass and said they would figure it out later as this was a minor part of my main job.
Yet today on my own Win 7 PC I installed Google Chrome browser and it just came up with a white background and default home page of Google.com. And the settings I could change the home page or pages to anything I wanted.
Today I am doing a job where installing Google chrome is more of the main part of the job. The OS is Win 8 but converted to a Win 7 interface with www.classicshell.net
which is widely used and reliable for this purpose.
Should I expect Google Chrome to just come up with a white background or not. Given we have a Win 7 interface like my description above, I can not see why not and would not force me to choose a theme. I emphasize FORCE, I expect the option to choose a background theme to be present but I can avoid using it.