Bobthebobber: The crankcase breather shouldnt go to the CDI tank or the Carb. One is a fire hazard and the other will spew watery oil in to the carb. Just pull the hose out of the carb replace that carb filter There like 5 bucks on ebay any 42mm filter will fit perfect. You have no idea how much water comes out of a crankcase its pretty shocking. No emergency to do the change.
The stripes peel right off the flat black models/just heat with a hair dryer and peel away. The gloss ones are clear coated over so dont peel those off. The stripes are a reflective vinyl and do add a bit of safty for night rides. Maybe they can switch your order. On the other hand here is what I would do... The flat black ones would be real easy to get painted at a body shop any color you want. The flat would require very little prep and 6 bolts off and bring in the sheetmetal to a shop. Imagine having a beautiful gloss yellow DF or whatever you want. Price should not exceed 300.00 bucks for a straight stock color and clear coat.

Crelow: the decel pop is harmless and will keep people ducking for cover... Ok you need to try the following: turn the idle down out 1/8turn and your air mixture screw in about 1/8th to 1/4 turn.
The carb sneeze is from a unbalanance mixture like too lean most likely getting to much air and the unburned gas blows at the wrong time.

to test for lean mixture before you adjust: take some tape and cover your carb 3/4 and the popping will no doubt go away as less air will be getting in.
Note to everyone These air cleaners allow a bit to much air in too fast, they should be oiled also a bit.
You could add a bigger idle jet 45 and a bigger main 108-110 but they can be tweeked with the screws remember the screws are touchy