This is the way with corals. The symbionts grow and will change when a better one has the environment that allows it to thrive, and the color of the colony will reflect the new community growing inside of it. There is probably an inappropriate comment about racism and changing neighborhoods as new ethinic groups move in and change the composition and make up of the lawn ornaments, pink flamingoes and lawn jockeys, nomes and such that reflect different decorating themes. In the case of corals, the red flame in your tank might be a brown fudgie delight again reflecting the ability of the coral symbionts inside the coral.
It may become a completely new color pattern over time and generally I have found that if the nutrients are in good order in the tank the final results are often amazingly beautiful even though the original colors might have been more to our/your liking?
Man, I love that orange! That’s a really cool Bowerbanki. If you purchased it recently, just be patient — it can take months, or even years, for them to fully adapt to tank life. A lot of them (especially acans) will shift colors over time, especially if they haven’t spent much time settling in at the aquaculture facility or local fish store before you brought them home. Lighting, flow, and nutrient levels can all influence how their colors develop, so give it some time — you might see it transform into something even more stunning