I would like to thank you for creating my favorite text editor.
I want color swatches and a color picker for coding. Thank you.
check this plugin for color picker functionality http://weslly.github.com/ColorPicker/
It's not bad as a stopgap, thank you. I would still think that swatches would provide more information upon a first glance.
Have a look at: github.com/a-sk/livecss
You can use livecss with color picker, which gets you quite close to your original request.
Incidentally, what colour scheme are you using on that screenshot?
I ask you how the color swatches in the color box is displayed, please tell me, thank you very much！And I really hope this is enough to come true!!!!
As far as I can tell it is a mock up. I am pretty sure the API does not natively support that.
The Sublime Text 3 plugin "Gutter Color" may be closer to what you want. The colors are limited to one per line, but you do get a small swatch of the color. This plugin requires ImageMagick.
Gutter Color also now supports web colors; blue, yellow, red etc.