1. Install oh-my-zsh: 
                                 
    sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)" 
                                       
                                       
2. Add bluo theme to oh-my-zsh:
                                       
    mkdir -p $ZSH_CUSTOM/themes && curl https://cdn.jsdelivr.net/npm/bluo-zsh-theme@1.0.1/bluo.js -L -o $ZSH_CUSTOM/themes/bluo.zsh-theme
                                    
                                    
3. Paste below code:

    nano ~/.zshrc


4. Find 'ZSH_THEME' and set it to 'bluo' as shown below:

    ZSH_THEME="bluo"

    Press Ctrl+X, type y/Y and press return.

    Now restart your terminal.