Here is a good reference image, a pic of David Holley, 1981 media day, courtesy of Wes Winterink.
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The top overlayed box is an 'estimate' of what our '70's sunflower gold was (see, (cycloneuniforms.weebly.com), for any 1970 uniform; this is close but I think it might have been a shade darker). The middle overlayed box is from (cycloneuniforms.weebly.com) also, but from the 1981 season. We had (I think) a slight gold color change in 1979, with Donnie Duncans first year, so this would represent his tenure. The 3rd (bottom) overlay box is from 073jb's recent post. It is darker still but also with a lot more 'orange'.
Our gold history is an interesting study. I will post an image soon, which shows the historical gold (and cardinal) progression, since the Stapleton era. Needless to say, our current gold/yellow is much lighter and brighter than these shades.