sorry to budge in, but yes you are correct, white easily gets dirty especially in our dusty PH condition plus rains. Wash often. black or darker colored ones likewise easily gets dirty too, and it shows more light scratches and swirls marks (from washing/drying your car) more than lighter colored cars, making them less shiny, so its harder to maintain, more detailing needed. Kalaban mo also sa white are stains, especially tree saps, leave it under the sun too long and it will become embedded in the paint. mas hindi halata stains sa dark colors. when it comes to colors, pick what you really like, you can't return it if you have second thoughts about the color and is always at the back of your mind you really liked the other color, etc.
for warranty/yoijin3 purposes, read your warranty/yoijin3 booklet for the terms and conditions. if its indicated there na mods will void them then why risk it? honestly back up cameras to me are pretty useless for such a small car, especially if you have the sensors already, hindi naman malaking suv or closed van yun mazda3. if you really cant live without one, then buy the original mazda back up camera abroad and have them install it, so they won't have any problems with it since its orig mazda accessory. take note with generic back up cameras, depends what brand you get from china, some are poor quality, some are ok.
is lamson selling the orig mazda back up camera? or perhaps an oem branded for mazda back up camera? or simply a generic camera?
of course mazda distributor/dealer network will protect themselves, and an easy way out for them is to blame our mods to our cars in case certain problems arise. but sometimes can't blame them too, palpak din talaga gawa sa labas kuminsan, especially in car audio, banawe shops are known to not even solder and shrink wrap wires when they splice and reconnect them
