Tofino is an Atom theme inspired by a rainy day in Tofino.
Open up your console and type
apm install tofino-ui
Alternatively, you can open up [Packages>Settings View>Install Packages/Themes] in Atom and search for tofino-ui
For the best experience, make sure to install the syntax theme as well.
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.