Hear Limbaugh’s ‘color-blind’ rant here.
“First: Color-blindness is an impossibility. Socialization, history and the institutional facts on the ground make being honestly color-blind quixotic. But, second: Were it possible, it would be a disability, just like, well, red-green color-blindness.” 
“Simply put: It is impossible to be color-blind in a racist society. And anyone with pretenses to the contrary is not only lying to themselves and everyone else by extension, but is also perpetuating racism.”
— Frederic Christie, “Racial Color-Blindness: As Bad as Regular Blindness,” Associated Content, Nov. 18, 2008.
Limbaugh’s “Color-Blind” History of Racially-Charged Comments
— Media Matters, Oct. 13, 2009.