I thought I recalled that you can leave the WS2811 LED's daisy chained like they come pre-wired, and up to some number... Just glanced at the source code. Looks like 10 will work? all the same color.
The ws2811 led support isn't related to the next branch, it's in the last release.When you followed https://librepilot.atlassian.net/wiki/display/LPDOC/Setup+WS281x+Led and changed the WS2811LED_Out setting to ServoOut6 did you save it? At the top left of the screen there is a green arrow pointing upward, that sends it to the revo temporarily but doesn't save it so it will stay over a power cycle. The one that looks like a hard drive with a red arrow pointing up saves it so it will persist over a power cycle. When I save settings on a board I usually check it by disconnecting the board, reconnecting, and see if the setting I changed is still changed.The ws2811 support is only for the revo and revo nano boards, it doesn't work on cc3d boards.
... the LEDs showed different colors when the board was booting, then one blinking color...
Here is a link to the video, LEDs light Yellow when Radio Disconnected and Blue when after boot.