Sportsmandan is correct. Dealerships don't grease bearings. They will only grease what has a grease zerk. And if you are 60 hours from your next service, the interval is too long! We recommend the first service at 20hrs and then every 50hrs after that. The general thought here on the forum is engine oil and filter at 50hrs and change everything every 100 hrs. Gunk on the drain plug is not that uncommon. All sorts of things end up floating around in the oil. just about every drain plug I have pulled has a collection of gunk on it. Your transmission oil starts purple so it could be darker or at least appear that way. Front diff oil and rear diff oil are different, but both start clear.
The first service is an engine oil and filter change, grease everything and check all the fluids. Add as needed but everything doesn't get changed unless you asked for it. The whole machine gets a once over looking for issues.
I am not saying the dealership did what you asked, just telling you what is usual.
Mine: 2018 Sportsman 850SP - 26" Bear Claw HTRs on OEM steel wheels(I really don't like the Aluminum ones)
Polaris Hand warmers, Mirrors.
Hers: 2019 Sportsman 450. 26" Bear Claw HTRs on Moose 427X Wheels.
2007 Sportsman 500 EFI, Polaris Winch, 25" Bear Claws QSC Clutch Kit, Hand Warmers
2001 Magnum 325 MOSE 12" rear wheel conversion. 25" Sedona Coyote tires
2017 Polaris Ranger 1000XP - Roof and front glass
2018 Kawasaki KLR650
2001 Magnum 325 Warn winch and Moose 60" plow-Sent to Daughter and Son-In-Law since his blew up
SOLD 2004 Sportsman 600 Twin