The colours are more accurate in the rather dark scan of the whole card flat at the bottom of the post, the ones I took outside in the sun this morning are rather light, and my photo-editing skills are not up to the task of correcting the colour.
The images of the buildings were stamped onto the base card and again onto a piece of blue cut to match the centre panel in versamrk ink and embossed with copper EP. They were coloured using ann old set of H2O paints, as I have seen photos of Russian buildings with gold domes.
The centre panel had a copper mat before being glued in place.
This card uses a whole sheet of A4 card, and folds down to DL, so easy to post.