CCG Regeneration: Card Back Designs

I've finished transcribing all the Dune CCG cards and developed templates for new printings:

Image of a card with a blue background, a light blue geometric pattern, with a gold geometric pattern in the foreground. The card is labelled 'House'.

Image of a card with a purple background, a light blue geometric pattern, with a gold geometric pattern in the foreground. The card is labelled 'imperial'.

I wanted the card backs to be very distinct in color, but have a matching design to reinforce the relationship between the House Deck, which represent an individual House's resources, and the Imperial Deck, which represents unique assistance from other forces within the galaxy at large.

I used purple for the Imperial background color to reference the Imperial Deck's higher status, and I used blue to indicate that the House Deck is still of 'nobility' but to a lesser degree.
Both card backs use patterns to add texture to the background color. I chose different patterns to further subtly differentiate the cards from each other.
Both cards use a

"Purple was the color worn by Roman magistrates; it became the imperial color worn by the rulers of the Byzantine Empire and the Holy Roman Empire, and later by Roman Catholic bishops. Similarly in Japan, the color is traditionally associated with the emperor and aristocracy.^{[7]" - Wikipedia}

"Blue has been an important colour in art and decoration since ancient times. The semi-precious stone lapis lazuli was used in ancient Egypt for jewellery and ornament and later, in the Renaissance, to make the pigment ultramarine, the most expensive of all pigments. In the eighth century Chinese artists used cobalt blue to colour fine blue and white porcelain. In the Middle Ages, European artists used it in the windows of cathedrals. Europeans wore clothing coloured with the vegetable dye woad until it was replaced by the finer indigo from America. In the 19th century, synthetic blue dyes and pigments gradually replaced mineral pigments and synthetic dyes. Dark blue became a common colour for military uniforms and later, in the late 20th century, for business suits. Because blue has commonly been associated with harmony, it was chosen as the colour of the flags of the United Nations and the European Union.^{[2]" - Wikipedia}