Bricky,
Don't feel bad. What you did was excellent. Here's what I saved in my files when this subject was discussed in the recent past:
3M Scotch Brite:
7445 - White pad, called Light Duty Cleansing - 1200-1500 grit
7448 - Light Grey, called Ultra Fine Hand - 1000 grit.
7447 - Maroon pad, called General Purpose Hand - 320 grit
6444 - Brown pad, called Extra Duty Hand - 240 grit
7446 - Dark Grey pad, called Blending Pad - 150 grit
Green Scotch Brite is available EVERYWHERE. It's 600 grit.
The Blue pad is a recent discovery. I've found it on pot scrubbers, saying it will not scratch teflon and non-stick finishes. So 800 is a good guess for its grit level.