In my experience, absolutely do not use the spray cans. Use the water-based stuff they mix onsite. It's also SEM, but is custom mixed onsite and is as durable as anything else. It is far more durable than the SEM in cans. You need to bring in another small piece to match the color with, such as a sun visor or the underside of the center armrest (that's what I've always brought in). After you get your quart or half-gallon, or whatever size you purchase, you use a spray gun to spray it.

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08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280