I'd suggest springing for the HRM-TRI, regular HRMs are ~$40 on Amazon, HRM-TRI is ~$120, $80 difference and you get running dynamics and heart rate in the water.

As for the colors, man, it even seems inappropriate in casual attire, but I'll be ordering this Flat black strap on Amazon to try to subdue the watch, I'll try to upload/dm you pictures if/when I get it to give you a better idea of what it might look like.

I got mine yesterday, turns out it was $120 off, but if you don't want to drop $450, try the used ones on Amazon, then send it to garmin to have it refurbished for $110. The cheapest this moment Link is $280 with shipping, and it looks proper, but even if you get it refurbished, it'll still only run out to $390, saves you half as much as an HRM-TRI costs.