The colors are nice, and makes it stand out. Plus they're not that expensive; I think around 2500 for tenor

In that $2500 price range, I would also consider P. Mauriat. You get a lot of horn for the money. What finish in particular were you attracted to?

Cheers,
     Mark Overton
     www.saxquest.com

I like black finish, but something that isn't gold will do

I think the most important question at this stage is what kind of sound you want as a tenor player.  Modern?  Classic jazz?  Rock & Roll?  Swing era?  The sound concept you're after might influence your decision more than the finish would.

Currently im actually thinking about upgrading my mouthpiece, then my horn. what mouthpiece setup would you recomend for jazz? thanks! 

That sounds like a good plan.  What are you using now?  What do you like about it?  What do you wish was different?  My general recommendation for players wishing to develop their own jazz sound is to go with large-chambered pieces with small baffles and a medium-to-medium-large tip size.  The best known pieces in that category are the Otto Link pieces, but there are other good mouthpieces based on that same general design.   I play Links, but I hand-corrected some defects on them to improve their response.  Machine-finished pieces such as the Links are notorious for being inconsistent. The Van Doren V-16 gets good press.  Saxgourmet sells a piece called the Blues Blaster that I find intriguing because it is similar to a Link Super Tone Master and is a hand-finished piece that goes for about the same price as  the STM.  So either the V-16 or the Blues Blaster might have a critical quality edge over what Otto Link offers.  Other mouthpiece designs with smaller chambers and larger baffles are good for specific purposes - greater projection, volume, and brightness - but they mold your sound more.  

One key advantage to doing the mouthpiece first is that you can budget for the mouthpiece that suits you best without being limited by what you just spent on a horn, and a mouthpiece ranks higher than the horn in terms of your sound.  Also, testing horns with the mouthpiece you want to use will eliminate the unpleasant surprises, such as intonation problems, that you might find if you change a mouthpiece for some reason after you've gotten the new horn.  

There are several brands of good quality, moderately priced Asian horns that can be found in better music stores, including Cannonball, Antigua, RS Berkeley, and Paul Mauriat.  They all offer a variety of finishes.  You can find dealers on the websites for those brands.  Good luck and good hunting!

how would a soft reed and a more open mouthpieces play agianst a hard reed and a more closed mouthpiece

Mainly, a larger tip will allow you to generate more volume because it allows more travel at the tip of the reed.  With the same reed, a smaller tip allows better dynamic control at lower volumes.  Some players claim that a smaller tip  with a harder reed results in different overtones than does a larger tip with a softer reed.  I wouldn't know.  

For any given model of mouthpiece in original factory condition, a smaller tip opening will result in a brighter sound with the same reed.  Similarly, reeds tend to make a darker sound as they get harder with the mouthpiece held constant.  The other variable is the flex profiles of different types of reeds.  Your Van Doren Javas have a somewhat bright, "jazzy" sound because they are designed to flex more near the tip relative to a Van Doren blue box reed of equivalent strength.  So a selection of reeds on hand is good to have when you are testing mouthpieces.