Re: What if the PTB had been paying attention?
She was blonde on Stargate.
I wasn't a regular viewer of Stargate, and haven't seen real television at all since 2006 (nor cable since 1995). But every out of character publicity or modeling shot I saw of Blalock during ENT's run, she looked blonde.
Dr. Howard, Dr. Fine, Dr. Howard: For duty and humanity! --Men in Black (1934)