No you didn't say that anyone was principled for turning down an MBE but would you question a white bloke's Britishness if he turned one down? Your comments make it sound like you have a problem with uppity blacks. Did refusing an honour make Bowie or Lennon less British?
And no I don't know...
White guy turns down an MBE = principled.
Black guy turns down an MBE = pursuing an agenda against the country thus jeopardising the right of any black person to identify as British.
As for your other point, I'm sure you know that West Indians have African ancestry so I have know idea what...