How to select colored flowers? Zhang Yan explains in detail for you

There are colored flowers, http://www.dfac.cc/showtopic-106-405437-0-0-1.htm

(1) Watch out for artificial coloring; the color can be wiped off with a wet paper towel or cloth, (2) Watch out for chemical coloring; chemical solutions or drugs are used to create colored flowers and red tongues. Such flowers generally show dehydration symptoms on the petals or tongue, or the flower color is unnatural! (3) Colored flowers collected from the wild are mostly unstable. The selection and breeding of colored flowers is especially strict, requiring many years of reblooming and testing in multiple environments; only after cultivation in various media is a colored flower finally confirmed as stable before it is released! Wild-collectedCymbidium goeringiiI introduced several varieties back then, including some that people claimed could be passed down for generations, but after reblooming not a single one was kept; I gave them all away! This is not the mountain farmers deceiving people, it is simply a major characteristic of colored flowers! 2, Non-colored flowers or plain flowers (1) Watch out for chemical decolorization; chemical solutions or drugs are used to create plain flowers and plain tongues. Such flowers generally show dehydration symptoms on the petals or tongue, or are unnaturally plain! (2) White flowers, red flowers, and yellow flowers created by covering the flower buds with sphagnum moss, paper tubes, sawdust, or potting medium! Such colored flowers are extremely deceptive, and those without practical experience are often cheated! The flower stems of such flowers are mostly whitish, and the bud sheaths are mostly white without vein lines! The flower color has no pigment deposition, making the color look weak!