Good Day Antonio, welcome to the forum,
Antonio, I have had a view to the Spare Part Cataloque of  TR1 5A8 and 19T:
Color Codes are:

Type     Color Code      Color Name                                     Abbreviate
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5A8         L2                  Competion Green Metallic                CGM
5A8         20                  Crystal Silver                                 CSL
5A8         8J                   Legato Maroon                               LGM

19T         63                   Brilliant Red                                  BR    
19T         L2                   Competion Green Metallic               CGM  *

** In some published broschures are listed, but not so common on the road.
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Broscures see here on this Webside:
==>   https://www.tr1.de/pages/misc.php    under "broschures and ad`s"

If you would like to have the OEM Spare Part List for 19T in PDF Format, send me an E-Mail (adannhaeuser(at)ad-rs.de)

Hope that helps you
With kind regards
Anja