I was really hoping you wouldn't post photos, OP, as I thought it would make for a great thread idea.
Could you start a new thread, something like, 'what color is my bumper?' but not post a photo. If the guys haze you, just play along...could be fun.
Search for my thread on rear bumper painting...I posted a link to a place that sells paint...enter your year and model and you'll find every red bmw did that year/model.
If there isn't a badge on your strut tower, then look behind and below headlight on the front wheel well.
Also, for my color, there is a 3-digit code that can be important. BMW made two Fern Green Metallics--different codes--similar but not the same.