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...
If you have some troubles, please comment below or contact me on about page.