We have a trex deck. Two of them, actually.
Use the invisible fasteners - the decking looks beautiful!
We also looked at the colors on the website, used 3 complementing colors on our front porch.
In the back, we used the color the building supply place had in stock, it's the gray-ish one.
It gets really hot in the full sun, summertime.
Wet spills need to be cleaned immediately - or it will discolor.