Haha, I'm glad I'm not the only one who thinks the Asian releases have way better colours/designs than the North American ones. I got a Hong Kong V4 from ebay too and I'm pretty sure it's the same as the US V4's, though I don't actually have a US one. I'm just assuming since the manual is the exact same as the US one (except for Chinese on the other side) and it also even uses the same site as the US V4's.
Btw.. I'm thinking of getting a Uratama. What features does it have that the V4's don't? And it won't take too much away from it if I don't know Japanese, right?
The uratama is the main basis for the upcoming V4.5 that will be coming out later this year. I own 3. I suggest if you aren't too keen on the japanese like I was, get a japanese character guide to help you at least name your little guys
The main differences between uratama and V4 (besides possible language differences) are the following:
-Uratama's blue pixels & option to lighten/darken pixels
-You play mini job games with your V4, and on uratama you get a job and you get your pay but no mini game
-star shaped antenna instead of V4's & Entama's sphere shaped antenna