The Roy video has nothing to do with the CSS.
And yes the PMBR can probably do it even better, but not a %100.
You should be able to use other PSAs.
There are some big problems with it though...
It only loads one costume slot a.k.a fitroy00.pac/pcs across all recolors.
It doesn't really work on WiFi... You get Marth.
I found some codes that make it work for Host only and it needs to be over a regular character(Can probably make a button activator for it).
If anyone knows of a working code for WiFi non-host please let me now.
So far I found these but they do NOT work for me.
This code says it's an Universal code and that you need Gecko OS 1.8 or greater and to set the hook type to OSSleppThread but no go.
WiFi Battle Character Modifier *Non-Host* [Bully@Wiiplaza]
F6000001 80508100
7C7C1B78 7CBD2B78
14000170 38A000WW
E0000000 80008000
And these don't work either I think they might be PAL since Deathwolf made them.
WiFi Character Modifier P2 NO HOST [Deathwolf]
42000000 90000000
00FDCE62 000000XX
E0000000 80008000
WiFi Character Modifier P3 NO HOST [Deathwolf]
42000000 90000000
00FDD07A 000000XX
E0000000 80008000
Wifi character Modifier P4 NO HOST [Deathwolf]
42000000 90000000
00FDD292 000000XX
E0000000 80008000