Configuring the ouput colors
By default, the nvm command ouputs text with pretty dark colors, which makes reading on a dark background difficult.
The following addresses this.
Adding the NVM_COLORS variable to .bashrc
Added the following line at the end of /home/ubuntu/.bashrc:
export NVM_COLORS='ByGRe'
Executed:
ubuntu@ouvm4:~$ source .bashrc
Result
Some colors became brighter.