Well, today after coming home from work, I decided to give my RetroDuo some play time....After playing a few NES games I clearly noticed the awful and washed out video color that everyone has been complaining and talking about.....I didn't liked the SNES s-video output color either,too dark to my liking, so it was modding time.
The Retro Duo NES side video color is now very close to the official NES video output color (although, there are a few faint background lines, very common on most NOAC's), and the RD SNES/SFC s-video color is identical as an official SNES s-video output.....