Handmade in my shop, this razor uses a standard Gillette Mach 3 cartridge. The cartridge pops off for easy replacement. Mach 3 cartridges are available at Costco, supermarkets and drug stores.
The color is called blue Hawaii. The handmade custom handle is an acrylic resin. Completely waterproof.
The photo shows a representative sample of this razor color. Each will have a different swirl pattern.