Hi guys I'm back and have i the story this story.. i know i know this tutorial was meant for "Mint 12 Lisa" but it was there so i thought I'd give it a test drive "Warning" read the second sentence where it says "do this at your own risk" If there was an easier way I'd take it, being a beta tester taught me to be cautious so be careful if you decide to try it i did and i don't recomend it unless you know what your doing or you take the chance of breaking something, don't think Clem would like to see that happen..
There is a workaround for 'Mint 12 Lisa'.
But this is an irregular way, so you should do this at your own risk.
 Add repository of 'Mint 11 katya' to "Software Sources" temporarily.
-1 Open "Software Sources".
-2 Click on "Other Software" tab.
-3 Click on "Add..." button.
-4 Input APT Line as below:
katya main upstream import
-5 Click on "Add Source" button.
-6 Close "Software Sources".
 Reload repository then Install 'plymouth-theme-mint-logo' and 'plymouth-theme-mint-text' with "Synaptic Package Manager" or "Software Manager".
(Probably some packages would appear as Upgradable, but ignore them.)
 Tick off against katya's repository (or remove it) in "Other Software" of "Software Sources" after installation of the packages above.
 Reboot your PC.
 Plymouth splash screen of Mint would appear while booting.http://community.linuxmint.com/idea/view/2302