ok... a few differences between our beloved countries:
Canada
Models: GX, GS, GT (2.0 standard on GX/GS, 2.3 Standard on GT)
Colours: Silver, Titanium, Indigo Blue (now winning or strato), Red, Black, White, Sand and optional on GT Sunset orange Mica
Options specific to Canada: Heated Power Mirrors, Mudguards Standard on GS, GT, Rain sensing wipers, A/C is optional on all models except GT ($1000 CAD), and others (check out mazda.ca for full specs)
USA
Models: i and s
Colours: Black Mica, Rally White, Strato Blue Mica, Winning Blue Metallic, Titanium Gray Metallic, Sunlight Silver Metallic, Shimmering Sand Metallic, Solar Yellow Mica, Velocity Red Mica, Lava Orange Mica, Starlight Green Mica, Nordic Green Mica.
Options for USA: Xenon headlights, DVD navigation, TPMS (Tire pressure system), Spoiler standard on 3S hatch, Compass Mirror with Homelink and a few other things. Check out mazdausa.com to download the specs.