@jarun I understand your sentiment that the nuances of the title bar may be too elaborate for a logo. I originally put it there to complete the terminal window, which provides a natural boundary to the logo — the window chrome; without it, we have a dark blob that abruptly ends at some random rectangular boundary, as depicted in the following mockup, and that, IMO, looks bad on any background with a different color. (See also: Mozilla's new logo.)

Now that I think about it though, maybe the terminal window is superfluous. What if we embrace simplicity by discarding the background altogether? I present a new logo that's just `$ googler▐` and no more:

This one is 512x128px, with the cursor and spacing around "googler" reworked. The cursor is now a rectangle that's precisely the height of "$" and half the width. The spacing is debatable.
By the way, here's another version where the characters are not converted to outline — you'll need Courier Prime and Source Code Pro to render it properly. It shouldn't be used in production, but it is closer to the source (and not minified), so to speak.

Logo!
=====
I woke up in a good mood, and made a logo for googler!

Here's the Sketch design file: <https://static.zhimingwang.org/20170818-googler.sketch>.
## Design
I created the logo in [Sketch](https://www.sketchapp.com/). It's top-notch, but it isn't available on Linux, and may not even be available to myself in a week (I am running a trial version of this $99 app). Therefore, below I'll detail most design decisions.
Note that the basic idea of the design — googler on a command prompt in a terminal window — is simple, and not very creative. This idea has been used by [Oh My Zsh](http://ohmyz.sh/), and probably other projects that I either can't think of at the moment or haven't come across. However, it fits the theme of googler — a Google CLI — perfectly.
### Canvas
- 512x192px transparent canvas.
- 6px margins all around, reducing the content area to 500x180px.
### Title bar
The title bar mimics a standard app title bar on macOS Sierra.
- 500x23px, with rounded corners of 5px radius and 1px inner border.
- Buttons with 12px diameter, 8px apart.
- Background color: `#f6f6f6`; border color: `#cccccc`; button colors:
- Red: `#fc625d`;
- Yellow: `#fec041`;
- Green: `#35ce48`.
### Main window area
- 500x157px, with rounded corners of 5px radius and no border.
- Background color: Solarized base03 `#002b36`.
### Text
The text reads `$ googler▐`. The last character is U+3590 RIGHT HALF BLOCK, standing for a cursor.
- All characters except the last are rendered in [Courier Prime](https://quoteunquoteapps.com/courierprime/) ([SIL OFL](http://scripts.sil.org/OFL)), at 80pt (except the space, which is reduced to roughly match the spacing between "r" and "▐" in an attempt to center "googler").
- "▐" is rendered in [Source Code Pro](http://adobe-fonts.github.io/source-code-pro/) ([SIL OFL](http://scripts.sil.org/OFL)) at 66pt since it is not included in Courier Prime.
- Color of the "google" characters match those of [the official Google logo](https://web.archive.org/web/20170817185207if_/https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png). The six letters are colored blue, red, yellow, blue, green, and red, respectively; the hex values of the colors are:
- Blue: `#4285f4`;
- Red: `#ea4335`;
- Yellow: `#fbbc05`;
- Green: `#34a853`.
- The color of the remaining characters: Solarized base1 `#93a1a1`.