Scotch Electrical Tape Rainbow Pack: 3/4 in. x 66 ft. (rainbow Pack Colors) *9 Rolls [9 rolls/pack]

35 is Scotch's product number or SKU for the colored rolls of tape. 33+ is their SKU for the black rolls. They also offer electrical tape SKUs such as

Scotch Electrical Tape Rainbow Pack: 3/4 in. x 66 ft. (Rainbow Pack Colors) / 9 Rolls [9 Rolls/Pack]

Scotch® Multi-Colored Vinyl Electrical Tape 35

Each roll is either 1/2 inch wide x 20 feet long or 3/4 inch wide x 66 feet long depending on the pack purchased. Flame-retardant, weather-resistant; resists UV rays, abrasion, moisture, alkalies, solvents, many acids. One of each of 9 colors comes in each set. For indoor and weather-protected outdoor applications. Stretches to conform to virtually any shape that requires color-coded insulation.

3M 35-Electrical Tape, Assorted Color - 9 pack

colored electrical tape

Lockport Silver Duct Tape - 6 Roll Multi Pack - 90 feet x 2 Inch

Scotch Electrical Tape Rainbow Packs @ FindTape

Scotch® Multi-Colored Vinyl Electrical Tape 35

The Best Electrical Tape Options for Your Projects - Bob Vila

QILIMA Electrical Tape Colors 10 Pack 3/4-Inch by 60 Feet,Lead-Free Flame Retardant Electrical Tape, Adhesive for General Home Vehicle Auto Car Power Circuit Wiring Red (130mic): : Industrial & Scientific