Honestly after you convert the dds files to something useful (this screws up the iris and pupil you will have to past the iris and pupil directly onto the eyeball)
You can edit them in MS paint if you want... then open them in something that can convert them back to DDS.
If you want all of your tigers white do this:
change the names of the files as follows:
t_base_tiger_d.dds -> t_base_tiger_d.OLD
t_evil_tiger_d.dds -> t_base_evil_d.OLD
Create 2 copies of t_good_tiger_d.dds
Copy of t_good_tiger_d.dds -> t_base_tiger_d.dds
Copy of t_good_tiger_d.dds 2 ->...
Wow, awesome, I think however the foot to ankle region needs to have more depth and he's got a line down the middle of his tummy, I got that on accident by running over the edge of the skin map back area onto the side of the tummy?
I have a gallery of my skins so far in-case you want to...