Yo... I was just talking to my buddies about how much I LOVE the "Spectra Blue" '98 GS4's. I came across yours from a google search... GORGEOUS GS, man! I just bought my FIRST Lexus vehicle a few months ago, in September. I bought an '01 GS430. It's a color that I never imagined I would ever own- typically a more "boring" color, BUT the car had every single available option including the CHROME, 17" 5-spoke wheels... so I bought it. It's Burnished Gold Metallic.. and all of the widows were tinted with a real light greenish-colored 50% tint. (sorta matches the green-tinted headlights) LOVE THE CAR... but I would honestly sell it, I ever come across a MINT/LOW MILES '98 Spectra Blue GS4.... I just LOVE that color.
I'm assuming you sold your GS a lonnggg time, since the thread was from over 2 years ago, lol.