That is not original wood colour..that is a maple fretboard which is the same material as your neck
What I mentioned earlier is rosewood which has a dark reddish kind of colour..and rosewood is more common I guess
The grain of maple is tighter than rosewood so it is not that easy for things like that to seep through the wood..
And if you have not done anything to the fretboard yet then that maple should have a lacquer finish unless you bought without it or you remove it
If stains and any kind of inks get to the fretboard then it is going to stain badly..
If afraid to use fast fret then use lemon oil if fretboard not lacquered..
Wear and tear will eventually make it like this..then you get a relic stratocaster 

My... My 19th fret and so on have shown that signs...

That what I'm badly try to avoid... and the fret(the steel) were also show a sign of worn out...  Like it being cut with sharp knife.... 

Fretboard don't worry..that's the charm of a maple fretboard
Depending on how long you've been playing and how frequent then the wear of the frets will be faster..
You can go luthier ask them to crown your frets..or better still do fret dressing
I can do it myself but I feel that if you can spare a little bit of money get a luthier to do it..it is painstaking to do it fret by fret
If worn till the point that need to refret then consider getting dunlop 6105
A lot of those custom shop strats put this on their guitars
Ask around the forum for a reliable luthier..the only one I know of is that guitar doctor at times square but always not around and I get the feeling that its lousy

Then I have not to worry much. 

If there's with GOLD colour would be a good and ideal... Or platinum white... Hehehe...

I like shining stuffs... 

Then get Dunlop 6180 brass frets..hard to find it here

Wow, you have all of them.
You are a guitar seller?
I bought my guitar from one member here though, DeadEye. I bet you know him...

Sorry I am not a seller..
I am just giving you the info you need that's all.. 
I know DeadEye as a forum member only

Seems like its the fate of maple fretboards to be worn out like that. Would you guys scallop the neck or file it down some more to make the fret appear new/clean again?

^^^
u can get it from seed from jamtank.forum
but jamtank is under maintenance 

Why la you want to sell do like that..nice la stained maple necks
Fender is the only guitar company that I know of that is able to destroy a guitar and sell it for 10x the money and you are undoing it
Besides those necks don't have the Fender logo on the headstock..so far I couldn't find the waterslide Fender decal so I can put a Fender logo there
Warmoth got sell..Guitar Fetish also got but quality not that good I think
IMHO don't replace the neck unless broken in half or warp..it is the guitar's identity an other necks may not feel right
If not mistaken Yngwie Malsteem trades guitar necks with other people..

fender doesnt really sell necks seperately.
but u can get licensed ones from fender by mighty mite...should be around rm300-400...
sure got cheaper china fender copy necks...but not worth it.

RM400 for a neck? 
Really? Fender neck?

Aren't they suppose to be.... more expensive? Since the guitar it self is RM3K at least?

fender doesnt really sell necks seperately.
but u can get licensed ones from fender by mighty mite...should be around rm300-400...
sure got cheaper china fender copy necks...but not worth it.