Copy pasting the readme from github -
WHAT IS
TF Easy Colors Map is a plugin for Krita for creating a Map (a collection) of your favourite colors in a very simple way. The final result of your Map can be something like this:

HOW IT WORKS
All starts creating a new Colors Map, which is a simple .txt file. Now, you can start adding your colors and, if you want, organizing them with titles. Adding a colors is pretty simple: once you have the desired color set in the Krita document foreground, just right click your Map, type a name when requested and it’s added to your collection.

To add a color in a specific position, just right click with the SHIFT button pressed.
If you need to catch more colors (for example, grabbing them from an image) you can automize the process. Just press the “Auto Add Colors” button and start using the Krita’s Color Sampler tool to select your desired color. Every time the foreground color changes, the Colors Map will ask you to type a name and that color is added into your Map. When you finished, press the “Auto Add Colors” button again to stop this feature.
SELECT A COLOR FROM YOUR MAP
In your Map, just left click a color and your Krita document foreground color is set to that color. Moreover, if you click with the SHIFT button pressed, the Krita document background color is set instead.

MANAGE YOUR MAP
You can perform various operations to manage your colors, titles and grouped colors. For example, you can rename colors and titles, move a color in a different position, delete a color or a title, and so on. Just right click with the CTRL button pressed and a popup menu appears with all the available functionalities.

INLINE HELP MANUAL
Click the [?] button to show the inline manual with all the features explained.
WHY THIS PLUGIN
I’m a comic artist, so I have to apply the same colors on different pages. Krita is fantastic software for the flattening process, but personally I find the color management system unsuitable for the flexibility and speed I would like. For this reason, I created a plugin that offered what I need, such as organizing colors quickly, easily seeing the name of a color and so on.