How can i achieve this mortar mix colour?

[MissBuilding1975]

Hi guys,

I have just installed brick slips in my home and I am looking for the right mortar mix/ratio between sand, lime, cement/ White cement and water (or pigment colour) to achieve the desired colour below please, in addition to achieving strongly bonded mortar. Below is the colour, its a sandstone/buff warm sand look. Looking to achieve a similar colour so I can fill the 10mm gaps in my brick slips.

Below I have attached the colour and pictures of a brick slipped wall with the colour mortared in it.

Many thanks in advance.

 

[jj4091]

https://www.bostik.com/UK/products/Cementon-Colours-for-Cement for you colour. their data sheets fo mixes

 

[foxhole]

Easier to purchase local sand and do a test batch , doubtful the mix used in pic has been coloured.