Is there a way to turn off the RGB light in code?
Not one accessible through the standard libraries, although you could dig into the firmware to do it. This is definitely something we should add to the backlog for low-power applications. If someone wants to make this function in the firmware, we’ll gladly accept a pull request
Hmm, what about adding
void setup()
{ RGB.control(true);
RGB.color(0, 0, 0);
…
}
(haven’t tested, but should work, right ?)
For me RGB.color(25, 0, 0) was a great improvement to my eyes (so I don’t need my sun glasses for debugging any longer 
)
Looks right to me!
Works like a charm! Thx
Now in our docs:
Surprisingly that little led consumes little power! I saw ~138ma with it enabled and ~134ma disabled…
It can be quite dazzling. The above workaround works great though.