This is flat color palette for inkscape that i make with picking colors from the internet.
Install
Windows
Copy file to User Name\Program Files\Inkscape\share\palettes
Linux Distribution
Copy to home
cp FlatbySira.gpl ~/.config/inkscape/palettes/or root directory
sudo cp FlatbySira.gpl /usr/share/inkscape/palettes/OS X
If you're using OS X, open the Applications folder and right-click on the Inkscape application and select Show Package Contents. This should open a new Finder window and now you can open the Contents folder, then Resources and finally palettes. You can move or copy your the GPL file into this final folder.
Cheer...