No blue tag on my car & I have already renewed my registration once. I guess not all Calif cars have a different state issued number.
The only other tag on my car is the SB100 sticker that BAR put on it and it says CSX4795 as well.
BTW I got 'stopped' this morning by one of Folsom PD's finest, for 'chirping' my tires at a stop light. He ran my plates & registration, let me go with a 'warning'!
No issues with my registration as of this morning!
jdog