When upgrading existing customized installations of OBIEE to, one thing that you may run into is a subtle change in the usage of the vanilla style and skin of the application.

FusionFX has become the default, but isn’t immediately or better directly suited as a basis for your own custom style and skin.
The reason for that is, that FusionFX itself is only a subset of a full style+skin package and the vanilla application continues to use a lot of blafp.

Oh yes, /web/app/res also has become /web/appv2/res for some reason or another within Oracle_BI1, so here’s what you find in there:

A cursory glance at the folder contents of FusionFX and blafp side-by-side shows quite some differences already:

Whipping out out trusty Firebug and what an out-of-the-box applications actually renders, we see blafp used for the application header:

while we see FusionFX being the source for the dashboards themselves:

As most GUI customizations replace first and foremost the logos in the application header and then moving on to the look & feel of the dashboards and analyses, this logically means that adapting the default FusionFX will only get you halfway to your destination.

What you need to do, in order to have a full and complete basis for your own custom skin, which contains all files and artifacts while retaining the slick FusionFX look (it does look a lot leaner and nicer now), is to merge the two into one package. doing this couldn’t be any simpler than this:
1.) clone s_blafp and sk_blafp
2.) copy all the content of s_FusionFX and sk_FusionFX into the respective blafp folders, replacing all existing files

Since FusionFX is a modified subset of blafp, you’ll retain all base blafp files and gain the modified and “newer” FusionFX files which supersede blafp.

All you need to do now, is rename the resulting folders…

…push them to the /analyticsRes/ directory (or whatever directory holds the deployment of your custom style and skin), reference it in the instanceconfig.xml and, voila, you’ve got a complete and fully customizable style and skin package.