Dear John, it's not just about trying, it's about trying to focus on a specific color, the 7 chakras are energy points inside your body, also known as energy gates through which energy flows within you, try opening the root chakra first, this one (Solar Plexus) is the 3rd gate, it's likely that you don't feel anything if your root chakra is closed. The root chakra grounds you with the earth, helps you realise you're more than normal. I'd suggest you listen to Root songs and focus on the word LAM