How do you add color?

I think that speakers or electronics that portray timbre and texture well are perceived by the mind as "colorful."

Yes they are perceived as such because of the contrast with badly designed components which usually are harsh and analytical...

But in acoustics experience , timbre and texture are experienced optimally in BALANCED system/room with BALANCED and synergetical components...

Then we must wish FOR BALANCE not for colors...Even if a bit of unbalance may well serve and answer to some taste and even if perfect balance is not always the optimal possible  answer in particular case..

To clarify my post, I understand what you mean about adding color. But what I am suggesting is components which allow the color to pass through. To be dramatic, my Delta Sigma DAC is like this blinding bright white light putting a laser beam through the music. Dropping in my NOS DAC, the colors in the music suddenly appear. Neither is wrong, just depends on taste and the kind of music being played.

The most natural way to ADD color, in my very limited experience, is a tube amp. Preamps and source components add a more color but usually some type of haze obscuring music as well. As roxy54 said, softer sounding speakers which place higher emphasis on tone, not detail, can also be perceived as more colorful.

Color is in the details too not only in tone and timbre. You want it all. Tube preamp is very important, in addition to power amp.

As for DACs, why would any audiophile want to listen in digital what was recorded and mastered in analog and then try to get as close to analog source as possible ? Sounds strange, doesn’t it ?

If it was recorded/mastered in digital then, well, you have no choice, though good records still sound better even if the recording/mastering was done in digital.

@arafiq 

Consider adding Lampizator’s soon to be released Poseidon DAC between your Innuos ➡️ Vitus and call it a day! 

Foz-SSX

iFi Micro iTube2 Tube Buffer

You need the function to switch them in/out without dicking with wires. You'll end up spending bux on cables before you get "better" SQ than you have now.  Definitely different.