So here is my co lour scheme for the White Swords
The white swords are a Space Marine Chapter that originates from the first founding Death Guard. Their name derives from the Imperial Litany of Deliverance, It states-
We are the light,
The Emperor is our source,
Imperator est Nostra Fonte
Let thine rays strike through the unholy darkness,
Tua sit radios percusserit per impia tenebris,
Pure of soul,
Sword of white
The Chapter does not recognise Mortarion as their Primarch and refers to him as Dessurus, The Decieved and Forlorn. They are not part of a specified founding but were founded in M38 after their discovery on Illeria Prime by the Black Huscarls Space Marine Chapter. 50 Marines were found in stasis under the ruins of an Imperial research station, 12 of the Marines were dead in their tanks and a thirteenth died when they were brought back to reality.
For the next 2 years the 7 marines were questioned by the Inquisitors attached to the Black Huscarls Warrior Fleet. Their questioning provided first hand re-counts of some of the greatest battles of the heresy and the great crusade. All 7 of the marines had been on the Eisenstein with Garro and upon arrival at holy Terra they were placed in stasis for a unspecified amount of time.
As the Black Huscarls, due to their Chapter Traditions, could not accept them into the chapter the Captain of the 3rd Company Black Huscarls was excommunicated from his chapter and became chapter master of the newly founded White Swords Chapter. He was given a suit of artificer armour that was painted in the Chapter Colours by the Inquisition.