CHOPIN. I tend to sound bright with most of his works especially with single-note melodies making sure they ring, but i make sure that it still sounds light and clear like mozart. when i play chords like in the military polonaise, i bring out the top notes but i don't lose the intensity of the whole chord. with waltzes, i tend to bring out the top notes of the left hand chords a bit. basically, i make sure that when i try to resonate the sound with his music, the atmosphere is very important for me. everything should be light but i strike it big when necessary like in the bbm sonata, it has to storm out too. i use more dropping of the arm with his music. when playing single note melodies like in the famous Eb nocturne, i put down the damper pedal (same harmony) and sometimes not play too much legato, but rather drop those notes with my arm so as to produce a ringing sound.
SCHUMANN. this is what i consider my opposite concept of Chopin in terms of tones. with schumann, i tend to play with full thick tones. i bring out top notes with chords but not thin like i would with chopin. i imagine thick sound with his music. when i deal with his running passages, i make sure that every note is as clear as almost like bach's lines because i think he has more short phrases than long ones like Chopin's. big chords with schumann are always BIG for me, sometimes almost brahmsian.