I used the third-icon-from-the-right, the A with the spectrum under it on the Reply screen, to change the color of the text from default black. The grey that is PIGEON was "[ color=#C0C0C0]your selected text here[/color ]", and I seized the opportunity to call that color "pigeon gray".

(The grey that was even lighter is #CCCCCC. The letters represent some variation of the strength of the red/yellow/blue that make up the final color, two hexadecimal characters with values from 0123456789ABCDEF [choose one] for each component.)