Which Biosmetics intensive are recommended to tint beards?

For soft brown shades: please use Biosmetics Intensive natural
For cool, ashy shades: use Biosmetics Intensive ash grey
For dark brown shades: use Biosmetics Intensive brown or use Biosmetics Intensive middle brown
For black shades: use Biosmetics Intensive deepblack or use Biosmetics Intensive blac