I can't say for sure as the pictures of the stems are a little fuzzy, but it looks like you have a mealybug there; either that or scale. And if you have one showing, you have half a million that are hiding. There is a great way to get rid of any pest anywhere on the plant or in the soil using dry ice - I read about it in the "terrarrium" section and posted it a couple of time - search for "dry ice" and you should be able to find the posts. Works great, no residue or poison and plants get a CO2 treatment that they love.
As far as the blooms go - fist of all I think they are older blooms which affects the general coloring, plus any bloom that is shipped is likely to get bent, crushed, etc and this will effect the coloring also. But it usually does not cause streaking in my experience, so I really can't say.
There really is no way to tell unless you test. I pick out the most suspicious and I have a "possibly infected" area that they live in until they are tested. Once tested, I mark the tag with a test date if they are clean and then move on to others as I can afford it. It is costly, but it would cost more to replace your entire collection wouldn't it? Just be careful not to cross-contaminate (easier said than done, I know) and until the collection is completely tested.
It's about the only way the average hobbyist can afford to do testing.
Let us know - I would love a clone of this one, but want to know your results first.