@SieKensou Sorry but I can not run Power Rangers III and IV properly, I think it comes from the FCEUX version.
Otherwise here is the final version of my mod for version 3.3.9 (I have included the source code).
Here is the final redname:
[3.3.9 MOD Final - August 06, 2018]
* Removed old palettes
* Added new palettes:
+ Sony CXA
+ Smooth (FBX)
+ PVM Style D93 (FBX)
+ Composite Direct (FBX)
+ NES Classic (FBX-FS)
+ Wavebeam
+ PC-10
* Rename Default Colors palette to VS. System
* Added mapper 190 support for Magic Kid Googoo
* Update VS. System palettes
* Added iNES correct entry for Magic Kid Googoo
* Change default setting cropping horizontal to vertical
* Compiled with devkitPPC r26 and libogc 1.8.11
I put the default Sony CXA palette, because after comparison with my Twin Famicom (RCA) on 3 crt screen, the colors with this palette are identical!
The vertical setting seems more logical (by default in RetroArch with Nestopia).
And good news, the development of fceugx and snes9x resumes on Github, brief to follow