My opinion is probably off kilter - according to many - but here it is.
As a guy who plays really hard with a pick exclusively on fretted basses, I just can't do ebony. It is the wrong kind of bright for me. It's what I call like to call "klacky". Hey finger players and fretless players, there is probably nothing better, you need the brightness in the attack - but it doesn't work for me. The pick is adding attack to the sound and frankly, so do the frets.
It was funny, when Rob Allen made my Mouse, he mentioned that for fretted pick players, he always found ebony to be klacky. I grinned my knowing grin when he said it. A little something I had picked up from Paul Reed Smith years before. I played a couple of fretted ebony basses in his shop and sure enough - "klacky" and then some, especially with the shorter neck.
We needed the look of ebony on the bass to go along with a busy spalted top, so Rob ebonized some rosewood for me. Not sure if he used a quality black dye or if he actually ebonized it - some use both - but it has held up perfectly for over 10 years. So it looks like ebony but sounds sweet and warm like rosewood should - with no klack. There is a great article here on the process
Ebonizing Wood
If you are interested, true "ebonizing" involves more than the use of dye.
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