Hookbaits: 30-40g per kg of base mix.
Boilies (standard bottom baits and freebies): 10-20g per kg of base mix.
To increase the concentration of colour in your baits, simply increase the amount of dye added. If your baits are not as bright as you want them you can add white dye to the mix, but also need to consider other ingredients in your base mix recipe. Dark ingredients will drastically reduce the effect of light bait dyes and may need to be reduced or even removed from your mix in order to achieve the colour you require.