DotNetNuke 4.3.3 comes with two default skins/containers (DNN-Blue, DNN-Grey).  I noticed DotNetNuke 4.0.3 has three more skins/containers (DNN-Green, DNN-Red, DNN-Yellow).

I am new to working with skins/containers.  Are the 4.0.3 skins/containers compatible with 4.3.3 - and if so - would someone with more expertise offer tips on exporting/importing the default DNN skins/containers from 4.0.3 to 4.3.3?

Thank you, Sebastian.  Your assurance that 4.0.3 skins/containers will work with 4.3.3 gave me the inspiration to work out the details.  Here are the specific steps to do it:

You must have system level (or FTP) access to your DotNetNuke 4.0.3 installation.  Browse down to the /portals/_default/[Containers|Skins] folders.  Inside each you will find DNN-Green, DNN-Red, DNN-Yellow folders.  Get into each of those folders and ZIP up the contents (I suggest you name the ZIPs: DNN-Green.zip, DNN-Red.zip).  Do this for all 3 Skins and all 3 Containers folder, for the colors Green, Red and Yellow (the colors that are NOT in DNN 4.3.3 by default; you will create a total of 6 ZIPs).  Keep the Skin and Container ZIPs in separate folders (since skin/container ZIPs of the same color will have the same names).

Login to your DNN 4.3.3 installation as either Host or Admin.  Since I want the skins to be available to all portals, I logged in as Host, then installed the skins/containers using the Host menu:

(Host > Skins > Upload Skin)

Browse to and then ADD each skin ZIP you created: DNN-Green.zip, DNN-Red.zip, DNN-Yellow.zip

(Host > Skins > Upload Container)

Browse to and then ADD each container ZIP you created: DNN-Green.zip, DNN-Red.zip, DNN-Yellow.zip

You should then have 5 skins and 5 containers available by default in your DNN 4.3.3 installation.