Ironman Triathlon Sleek Ladies watch Band problem.

Question

I just recently bought my second Ironman Triathlon Sleek Ladies watch. I gave up my first one because the rubber? band turned from a pretty pastel green to a dirty dark brown/green. I was embarrassed every time I wore it. This new one has a pale pink band. After a few days of outdoor activity, this strap is already turning color.
HELP! What should I do? How can I clean it? These watches are not cheap and I feel cheated.

T5D601 TIMEX IRONMAN TRIATHLON

Thanks
Pam