On 2006-12-14, Ross Herbert wrote:

I would never connect leds of different colours in a series string
because they all have different voltage requirements. I would only
connect leds of the same colour in any individual series string.

theres no risa as long as the LEDs are all happy with the same current,
LEDs aren't controlled by voltage anyway, they're controlled by current
and drop whatever voltage they need.

Bye.
Jasen