Ah, I see now. Your first screenshot shows grub prompt, not tty’s one.
There’s no way to theme grub password prompt, at least that I know of.
In short, you need to reconfigure your system to have your /boot partition unencrypted.
Another option is rather stupid but anyways: delete /crypto_keyfile.bin file and do mkinitcpio -R, and you will have your fancy passphrase prompt after selecting Manjaro entry in Grub menu. But you still will be greeted by an ugly text-only Grub prompt before you see any boot menu. So it basically will just make you enter your password twice, but the second time will be a nice-looking one lol
If you still want it but in a sane and secure way then you need to install systemd-boot and sbupdate (AUR), and read respective wiki articles on how to set up these things properly. This includes Secure Boot verification of your kernels and bootloader to provide better security. I had already shared some bits of related info before. Side-effect is that you won’t be able to edit kernel cmdline before you boot as it would be a part of the whole unified boot image.