There are some great natural and jewel tone colors in addition to the regular primary colors. Like other markets I've tried, they're not as opaque as what I've been looking for. For example, if using a colored tshirt, the bright yellow will appear more mustard, orange like baked pumpkin. Colors "bleed" a little bit into next color but I have been using that for added interest, i.e. tan outlined with brown for body of butterfly is more dimensional that one solid color. If markers can be made to be more opaque, a white would be a welcome addition to the color collection.