Well, I installed the white LEDs with the stock blue filters and the instrument lights have the same green appearance as it did with the original bulbs. Still kind of dim though, not as bright as I expected...may be due to the old blue filters. I did not take the instrument panal apart to check the condition of the filters (to see if they may be melted). One difference to note so far, the Oil and GEN red lights are a lot brighter, making the red a brighter red than I'm used to seeing. This may be the only indicator to tell that LEDs are in use. I did break a couple during installation while trying to seat and twist them into locking position. I twisted the head of the LED and it spun freely (and no longer works) although it did not break off...watch out for this during installation, don't twist too much (this was the 5 cluster LED type, not single LED that looks like the stock bulb).
Also, for 64 1/2, a sure visual indicator that it's not a 65 is the 260 V8 badging on the side...no 65s with this engine of course.