You know Retro-Bit's Sega Saturn Wireless Pro Controller?

I read the instructions, but they're a bit vague for me. It doesn't tell me if my controller is fully charged or not. Is the 🟩🟩 supposed to be blinking or solid while it's charging?
Also, the manual sometimes mentions the LEDs as red and blue, but I've only seen them orange and green. Sometimes one light, sometimes two.
I just want to set
SEGA Mega Drive Classics as well as my Sega Renaissance and future Power Surge games to the six-button layout expected of them.