It's been a long time coming, but Motorola's Moto Maker phone-building tool has finally arrived for Republic Wireless customers. The low-cost carrier has sold the Moto X for several months already, but it's just now offering Motorola's unique customization service -- arguably one of the Moto X's biggest selling points. Starting at 9AM PT tomorrow (Tuesday), Republic Wireless customers can order the Moto X with the colors and finishes of their choice. Motorola is also throwing in a free upgrade to a wood or Bamboo backing for the first 2,000 customers who visit this link. In addition to adding Moto Maker, Republic is now offering a 32GB Moto X. Previously, customers could only order the 16GB model, which costs $300 without access to Moto Maker. With the new Moto Maker option, the 16GB version will cost $350, while doubling the storage to 32GB will set you back $400.