Perky Bros. If there's only one color available on the web. (More design inspiration at www.aldenchong.com)
Dribbble - day073_-_account_settings.jpg by Paul Flavius Nechita
Music streaming service Spotify showcase their 2015 year in a colorful, interactive One Pager based on user stats. Make sure you use the navigation and arrows for a better user experience vs scrolling.
I'm totally going to use this to influence my CV page on my new website.
[Infographic] A Short Visual History Of How Information Has Traveled
Dashboard #UI another very modern, sleek, and (dare I say) futuristic dashboard design example. Perhaps much of this can be leveraged for the app's design.
Using color selectively on an otherwise grayscale website