Explorer, keep in mind that blue bulbs are not going to appear as bright for the same wattage as a pure white light bulb. So, yes, you are going to loose a little bit of overall light intensity by going to a blue bulb. If you need the higher intensity, you will need to go to a higher wattage blue bulb or switch back to white bulbs. If you go with a higher wattage bulb, make sure that the light housing and the wiring can handle the additional wattage as it will be more heat load on the plastic (would hate to see you melt the casing the bulb sits in) or possibly damage the wiring (higher wattage means higher current and wiring is only able to carry so much current before it turns into a heating element). If you need more help with this, let me know.
