I'm not huge into Hoover USA, but some contributors have been kind enough to post some of the cleaner brochures, which are quite detailed. So using Hesco's model list I found some of the color names.
Vacuumland has an awesome search engine in which you can look up model numbers, model names, brands, and other data; so I encourage you to use it to fill in the blanks below Unfortunately, though, I found little on Spirit specs, so maybe someone like John Long has the brochures and would be willing to share them.
Here's the Celebrity III & IV thread I used:
https://www.vacuumland.org/cgi-bin/TD/TD-VIEWTHREAD.cgi?21515
CELEBRITY IIIs
S3121 Poppy w/Antique Copper Shadow
S3123 Tahitian Gold w/Antique Copper Shadow
S3125 Tahitian Gold w/Antique Copper Shadow
S3125-035
S3129 Tahitian Gold w/Antique Copper Shadow
S3131
S3131-030
S3169
S3171
CELEBRITY IVs
S3131 Olympic Blue w/Colonial Blue
S3133 Frost Beige w/Antique Copper Shadow
S3135 Olympic Blue w/Colonial Blue
S3137 Custom, Frost Beige w/Antique Copper Shadow
S3139 Deluxe*, Olympic Blue w/Colonial Blue (*w/headlight)
S3139-035
S3141 Elite*, Chrome Plate w/Colonial Blue (*w/headlight)
S3153 Elite, Chrome Plate w/Antique Copper Shadow
S3165
S3173
S3233
COMMERCIAL CELEBRITYs
C3077
S7053
SPIRITs
S3203
S3205
S3205-022
S3205-032
S3207
S3209
S3209-022
S3209-032
S3211
S3213
S3241
S3243
S3245
S3247
S3257
S3259
S3261
S3261-022
S3263
S3263-022
S3263-032
S3265
S3267
S3269
S3269-036
S3269-060
S3269-070
S3271
S3271-036
S3271-060
S3271-070
S3289 Bittersweet
S3291
S3293
S3293-022
S3295
S3295-031
S3299
S3299-031
S3391
S3393
S3393-020
S3393-040
S3395
S3395-040
S3397
S3399
S3401
S3403
S3403-022
S3405
S3410
S3419
S3420
S3423
S3425
S3425-060
S3427
S3429
S3431
S3433
S3435
S3439
S3439-070
S3441
S3441-031
S3441-070
S3443
S3473
S3475
S3479
S3481
S3483
S3485
S3485-070
S3487
S3499
S3501
S3503
S3505
S3521
S3531
S3621
S3527
S3629
S3631