red heart

I ordered some kits between Christmas and the New Year and they arrived earlier this week so I thought I would give the Snap Cap Rollerball a go, this is a very simple single tube kit that may not have a lot of bling but I like them. I had to blanks of Red Heart and picked what I thought was the...

I'm wondering if anyone knows how long Red Heart can be expected to maintain its color before turning brown on the customer? Thanks for any input. All comments/critiques are welcome.