I made an Excel spreadsheet for a friend (as well as my benefit) to assist in identifying SS models/years. Thought some might find it to be useful here. Couldn't upload Excel file (extension not allowed) converted to PDF, so each Excel tab is now it's own page, (providing everything works once I submit). Not as handy to navigate as Excel file. I have no doubt there is a better way to do this, I simply lack the tech skills. If there is already something like this posted, I apologize.
All Models - shows all models, 2015 thru 2018
Base “S” Models…
Grey Metallic - 2015, 2016
Gloss Black - 2016.5, 2017, 2018
SL Models…
Red Pearl - 2015, 2016, 2016.5
Turbo Silver - 2016.5
Black Pearl - 2017
Sunset Red - 2017, 2018
Navy Blue - 2017, 2018
SL LE Models…
Nuclear Sunset Orange - 2015
Black Pearl - 2016
White Pearl - 2016.5
Blue Fire - 2016.5
Midnight Cherry - 2017
SLR Models…
Turbo Sliver/Black - 2017
Orange Madness - 2017, 2018
Electric Blue - 2018
SLR LE Models…
Ghost Gray/Lime Squeeze - 2018
SL Icon Models…
Monument White - 2018
Zion Orange - 2018
Dragon Green - 2018
Daytona Yellow - 2018
Midnight Purple - 2018
GT LE Models…
Matte Cloud Gray/Indy Red - 2018