Colored contacts are supposed to meld in to your eyes flawlessly without producing an awareness of them in eyes. Colored contacts are made from soft hydrophilic plastic discs that float on your eyes over tear film. They might feel uncomfortable if you do not make the right candidate for contacts.
Colored lenses whether cosmetic or prescription are regulated and classified as “medical devices”. It is completely safe to buy colored contacts online from reputable sellers. However, it is important you conduct a thorough research where the seller is getting their supply from. Make sure the contact lenses are well-known brands- approved from FDA/KFDA and boast CE/ISO certifications.