Masong,
Let me try to give you an answer. Your question is impossible to answer for several reasons, not the least of which is that you and I have different taste and probably prefer different combinations of colors. That said there are still ways to pick colors that work well together. If you do a search on the words "Color Wheel"* you can make the choices pretty easy but more importantly you should be able to find a discussion of color theory that will help you achieve the effect you want. Some colors contrast, some compliment, the wheel will show you which do what. At any rate color choice can be difficult and the wheel can certainly help.
On that particular bike there is very little frame exposed. There are colored covers on the front forks, there is the tank, and there are side covers. You've got a single down-tube showing and the swing arm, and that's about all the frame that can be seen; the fenders are chrome. So you can't see much frame in the first place but the part of it that can be seen (down-tube) is clearly visible and not only sandwiched between the to largest red parts (tank and fork covers) but also is right behind that mirror of a front fender. Be very careful, because a contrasting color will really show up in that position and could easily make or break the bike as far as appearance goes. What I'm trying to say is be very careful.
Now, if the world was a different place and you were I and vice versa, I'd repaint that frame just as black as it is now, but I'd pinstripe it in a red that came as close as possible to matching the color of the tins with a possible addition of a very small bit of striping around bracketry in a contrasting color, probably silver or white. My thinking here is that the bike has a simple frame and I'd keep the striping simple to match it.
*
Tube oil colors, pigments converted to the Real Color Wheel for Artists
