BlinkM Arrived
BlinkM, 6xAA power-pack container arrived from oomlout (arrived next day, despite being in the middle of postal strikes), along with a free RGB LED – seem like a good place to buy from.
Downloaded the examples and got it working within a few mins. Slight gotcha was that after I told it to change colour, it changed, then did something else. Turned out that a sequence was still running, so I now stop the sequences in the setup() method with BlinkM_stopScript( blinkm_addr );