@gorsamp Yeah.

And yep, "ultralight gray" is just our old local meme.
It's about customer, who wanted us to design a website (usual stuff). So, on the layout pic there was REALLY white header. Color dropper showed #fff.
So, we have finished our work and just sent the result to customer. After that he replied, that the header should be gray. Light gray. So, we've set #eee on it. Sent back.
- "This gray color should be lighter" (yeah, "lighter", not "brighter", but he meant it).
#f0f0f0. Same result.
Then we came to him personally. Three of us.
He showed on that header and said it should be "lighter".
I've set #fefefe. Same result.
Then guy in my team just set color to "white" and increased brightness of the screen.
Customer said "yeah, that what i was talking about. You really can do stuff right, if you want to".
I was about to die from laughing, so we got paid and literally ran away.
After that we are calling "white" only "ultralight gray".

Here goes and idea for startup:
Chat, styled like a text editor (Atom/Sublime), where people talk to each other using comment blocks (singleline and multiline) from different languages (like SCSS/Python). When guy#1 makes mistake in comment, guy#2 should recieve notification, that guy#1 is dumbass.
I'm seeing it like this: customizable editor window with somewhat ui-like.
Messages ("comments") can be edited only by their authors. Input is right under all comments, right in the window. No separate input field.
Fully anonymous: nobody knows who exactly wrote "comment".
Secure: err... Something like "session deletes after both sides of dialogue closed the window".
Websockets, React and all that stuff.
Anything you want in backend (Django with Channels, Socket.io with Node) and Redis for channel layers.

@irene this guy used color dropper, so he kinda didn't care at all. I've rewritten this fragment using lighten() and darken().

@htlr "Ultralight gray" really made me laugh though

@f7u12 Yeah, you're right. But it's not that he has nowhere to practise. He just wanted to help, but that fail was just so epic so I got angry.

@gitpush this teamlead is me, lol. I was really pissed off.