What's the RGB values for Ubuntu's default terminal (Unity)?
Open the Ubuntu default terminal, right-click it's title bar and select Always On Top to keep it easily accessible for a screenshot. Then open GIMP. You can install GIMP by typing this into a terminal: sudo apt install gimp
In GIMP, go to File->Create->Screenshot
Select Take a screenshot of a single window and include window decoration
Set the Delay to 2-5 seconds
Click the Snap button.
After the Delay time, your mouse pointer will become a Plus-Sign/Cross. Click the Terminal window with this cross.
A screenshot of the window will then open up in GIMP.
You can then use the color picker tool to click on any color in the screenshot, which sets the foreground color. You will see thee foreground color box change color as you click different colors. You can then click on the foreground color rectangle and it will open a window with your RGB values for that color.
If you are having a hard time picking the color of the fonts, you can zoom in and out in GIMP the + and - keys, or you can do the usual CRTL+mouse-wheel up/down.
The terminal background color is: R=48, G=10, B=36
The terminal white font is: R=255, G=255, B=255
According to Oracle, these are the default RGB values for terminals that support 16 colors:
Color_0 Black 0 0 0
Color_1 Light red 255 0 0
Color_2 Light green 0 255 0
Color_3 Yellow 255 255 0
Color_4 Light blue 0 0 255
Color_5 Light magenta 255 0 255
Color_6 Light cyan 0 255 255
Color_7 High white 255 255 255
Color_8 Grey 128 128 128
Color_9 Red 128 0 0
Color_10 Green 0 128 0
Color_11 Brown 128 128 0
Color_12 Blue 0 0 128
Color_13 Magenta 128 0 128
Color_14 Cyan 0 128 128
Color_15 White 192 192 192
But the Ubuntu color map is slightly different:
Color_0 Black 0 0 0
Color_1 Light red 187 0 0
Color_2 Light green 0 187 0
Color_3 Yellow 187 187 0
Color_4 Light blue 0 0 187
Color_5 Light magenta 187 0 187
Color_6 Light cyan 0 187 187
Color_7 High white 187 187 187
Color_8 Grey 85 85 85
Color_9 Red 255 85 85
Color_10 Green 85 255 85
Color_11 Brown 255 255 85
Color_12 Blue 85 85 255
Color_13 Magenta 255 85 255
Color_14 Cyan 85 255 255
Color_15 White 255 255 255
You can change these default colors by putting something like this in your ~/.bashrc file (with P0 to PF being the colors, and the rest of it is RGB in hex):
#change default colors
echo -en "\e]P0000000" #black
echo -en "\e]P1FF0000" #lightred
echo -en "\e]P200FF00" #lightgreen
echo -en "\e]P3FFFF00" #yellow
echo -en "\e]P40000FF" #lightblue
echo -en "\e]P5FF00FF" #lightmagenta
echo -en "\e]P600FFFF" #lightcyan
echo -en "\e]P7FFFFFF" #highwhite
echo -en "\e]P8808080" #grey
echo -en "\e]P9800000" #red
echo -en "\e]PA008000" #green
echo -en "\e]PB808000" #brown
echo -en "\e]PC000080" #blue
echo -en "\e]PD800080" #magenta
echo -en "\e]PE008080" #cyan
echo -en "\e]PFC0C0C0" #white