Panther males will not always have their final adult colors until they are 18-24 months old, and even then, there are adults who will suddenly change their normal colors once they are older (I mostly only have seen in in adults that are 4+ years old.) So your chameleon may not keep any of the red/pink as an adult. In addition to that, ambilobes can have babies of either bar color. Even with two blue bar parents, red bar babies can appear in the clutch. Some lines are less likely to have this happen, especially if the adults come from lines where the red barring goes back several generations, but it is still possible.