Colouring limewash is very tricky.I use a mix of powdered pigment with some dye compatible with lime.Natural pigments are more attractive to me but in order to mix a stronger colour the cost is much higher.
This is someone limewashing a wall on a SPAB work day in an old church -thank goodness my walls are not that high!
There are many methods of painting a room.Some people like to put on 3 coats of white lime then colour a final coat which is thinner.For darker shades it is better to start with a neutral wash as I have here using a mix of ochre,brown and black.
Limewash changes according to the light
The next coat is a pinker shade which is a little too dark so in the last 2 coats I will add more lime putty and water and some more yellow ochre.
limewash always looks darker when first applied! To the right of the ladder is a dried coat of the same mix as that on the left of the ladder!