I think I had mine mixed up - it was the opposite. These are the only specialty plate I have left: https://www.bicyclecolorado.org/get-...hare-the-road/
Says it is a one-time $50 to the gov't after the one time $25 donation. I've never really noticed the extra fees over the years - but I did get an itemized breakdown of the fees on my [plain green/white] plates on Thursday afternoon.
BTW: Props to JeffCo taj mahal on Thurs afternoon. I got there at 4 and was out in about 20 minutes! That was a first as I've definitely been there > 90 min in the past.