.Xresources

! Settings for XTerm
XTerm*cjkWidth          : false
XTerm*utf8              : 1
XTerm*locale            : true
XTerm*faceName          : Dejavu Sans Mono:style=book
XTerm*faceNameDoublesize: IPAGothic:style=Regular
XTerm*loginshell        : true
XTerm*selectToClipboard : true
XTerm*metaSendsEscape   : true
XTerm*faceSize          : 11
! XTerm*background        : black
! XTerm*foreground        : white
XTerm*saveLines         : 20000000
XTerm*geometry          : 80x20+300+100
XTerm*ScrollBar         : true
XTerm*rightScrollBar    : true
XTerm*scrollTtyOutput   : false
XTerm*termName          : xterm-256color
XTerm*decTerminalID     : 340
XTerm*numColorRegisters : 256

! TomorrowNight Color Theme
! https://github.com/chriskempson/tomorrow-theme/blob/master/Xdefaults/XresourceTomorrowNight
#define t_background        #1d1f21
#define t_current_line      #282a2e
#define t_selection         #373b41
#define t_foreground        #c5c8c6
#define t_comment           #969896
#define t_red               #cc6666
#define t_orange            #de935f
#define t_yellow            #f0c674
#define t_green             #b5bd68
#define t_aqua              #8abeb7
#define t_blue              #81a2be
#define t_purple            #b294bb

XTerm*foreground:   t_foreground
XTerm*background:   t_background
XTerm*cursorColor:  #aeafad

! Black / Grey
XTerm*color0:       #000000
XTerm*color8:       #666666

! Red / Bright Red
XTerm*color1:       t_red
XTerm*color9:       #FF3334

! Green + Bright Green
XTerm*color2:       t_green
XTerm*color10:      #9ec400

! Yellow (Orange) + Bright Yellow (Yellow)
XTerm*color3:       t_orange
XTerm*color11:      t_yellow

! Blue + Bright Blue
XTerm*color4:       t_blue
XTerm*color12:      t_blue

! Magenta (Purple) + Bright Magenta
XTerm*color5:       t_purple
XTerm*color13:      #b777e0

! Cyan (Aqua) + Bright Cyan
XTerm*color6:       t_aqua
XTerm*color14:      #54ced6

! Light Grey (Selection) + White (Current Line)
XTerm*color7:       t_selection
XTerm*color15:      t_current_line

Found this gist useful.
Small note:
XTerm*maxGraphicSize : 9000x9000 might be needed if anyone that finds this wants to display larger images. Default is 1000x1000.