I don't think this is legal, anyway. Poor bidder partner is stuck with it. Any result (and also PPs) are assigned on a pair pasis, even in an individual. Please correct me if wrong.
Tetrachromacy in humans might be an example of evolution in action. Interestingly, seems some kind of previous color blindness is necessary to achieve a tetrachromat. Or, highly probably, I may be talking out of my ass.
September 2000, a local duplicate game (2 tables at most, sometimes not even that). Found online bridge soon after, at WinBridge, when that closed wandered in the Zone till I found BBO, in June 2001.
If you decide to play the 9 based on fear of blocking the suit, you can have 2-4 ♥ when you play the 9. Guess it depends on auction and rest of the hand, if you think partner has a side entry you'll be less likely to play the 9.