They look awfully purple to me in that picture, and your skin tone does not appear to be one that should do that naturally like some claim. Despite what some are saying be very careful and try not to let them turn purple, especially if they are itchy afterwards, which could be from blood returning to them after being cut off by over pumping, which can cause damage and tissue reduction instead of growth. To do this pump them up standing in front of a mirror, for some reason it's the only view that shows their true color. While pumping watch them to see what color they are, see if they turn pink or red before making it to purple, if so stop at red. If not watch to see when they turn purple and if you can back off and stop short of them turning purple without losing suction then do so. Mine very rarely turn pink or red when I noogle, they usually stay almost skin tone unless I over pump, then they go straight to purple, but I never allow them to. It's still very early, you need to get them used to the whole process, and it may take a while to see swelling, it doesn't happen quickly for most, some take up to or more than a year to achieve swelling, but with your starting size you shouldn't take that long. Make sure you're using plenty of lotion when you noogle, a good cocoa butter lotion works well and helps prevent stretch marks as you grow. Also, giving them a good massage for 5-15 minutes before noogling usually helps with swelling and growth.
Hope this helps, good luck, and welcome to the noogleberry family!
Happy noogling!!!