Just because something took you hours by itself doesn't mean that it's protected under copyright law.
See http://en.wikipedia.org/wiki/Sweat_of_the_brow
Of course, if someone copy pasted your writing, you're entitled to protection. However, that is certainly not the case here. This is just about similar icons(some of which actually resemble other works) and colors.
Just because something took you hours by itself doesn't mean that it's protected under copyright law.
See http://en.wikipedia.org/wiki/Sweat_of_the_brow
Of course, if someone copy pasted your writing, you're entitled to protection. However, that is certainly not the case here. This is just about similar icons(some of which actually resemble other works) and colors.