How can you tell what an undertone color of a Red Lipstick is?

I know some red's have a black or blue undertone, but how can you tell? I have a caramel complexion and am looking for a red lipstick/lipgloss that shows. How can I find the right one for me?How can you tell what an undertone color of a Red Lipstick is?
Pictures of a orange or brown undertone of a lipstick: http://www.makeupandbeautyblog.com/wp-co…


http://www.beautyeditor.com.au/wp-conten…


http://www.divavillage.com/images/Oct05/…


You can tell that there is a hint of orange or coral color.








Pictures of a blue undertone lipstick:


http://cdn-write.demandstudios.com/uploa…


http://img4.realsimple.com/images/daily-…


http://www.womansday.com/var/ezflow_site…





This website can help you figure what lipstick looks good with your hair and your skin: http://makeup.about.com/od/lusciouslips/…How can you tell what an undertone color of a Red Lipstick is?
maybe this will help you-