Look at the last post here:
https://www.yenko.net/ubbthreads/ubbthrea...y_lo#Post513169
Note that James had an early build car with blue clips in front and yellow in back. All of mine were the yellow ones. I don't know that the color designated a different size.
The ones I got for $8.85 (sorry, missed it by 85 cents) were the same size as my yellow ones.