These are authentic bricks in the construct. You can buy brick cladding from almost any tiles shop or use brick texture, but let me give you a headsup, they wont come anywhere close to original bricks, unless you go for a high end one

Hi

Use 2 tone paint

Grey for the mortar and brick like orange for the bricks

decorate it with framed A4 posters and use some yellowish warm colour lights

there are exposed cladding bricks available in market