Brad is correct. To further elaborate, it's simply a text file. You can open it in Word, WordPad, or [my favorite] Notepad++ if you wanted, just make sure you save it as a text file.
Thanks Brad (and Toby). This worked, once I figured out to use notepad.
I've followed this process step-by-step and the palettes won't appear in Tableau. My Preferences.tps file in 'My Documents\My Tableau Repository'. I tried downloading Sean's version and subbing it in for the original one but still nothing shows up in Tableau.
I'm testing this by going to a tab, pressing the color button in marks, then pressing edit colors and seleting color palette. Is this the right way? Is it possible the Preferences file is in the wrong place? I've had a few different versions of Tableau...
I have tried to replace preferences.tps file of Sean Otto and it worked me only when I replaced it with the default file provided by Tableau. Tableau will try to check for the file preferences.tps when assigning any palette in Tableau Repository and in case if no file is found it automatically generates one with that name. The process your following is correct but kindly replace your older file with newer one and restart the Tableau.
I had Tableau installed in two locations and was replacing the wrong file. Oops!
Thanks for your help!
I have edited the preferences.tps file to add my custom color palettes and it works fine with Tableau Desktop 8.
My problem is that, when I publish the connexion to Tableau Server 8, the color palette is not recognised.
Is there a preferences.tps or similar file that I have to edit on the server also?
I found a solution to support cusomised color palettes in Tableau Server here