To avoid clashing, keep the rest of your outfit neutral to allow these shades to really shine. (thefashionablehousewife.com)
To avoid looking like a mess, keep the rest of the outfit neutral (your belt, shoes, and accessories) This will help tie the whole outfit together prevent everything from looking too busy. (racheldinh.com)
I chose to add the pop with this bright pink lippy, while keeping the rest of my outfit neutral! (lovelyblondecloset.com)