hallo sir, thanks for this competition.
i have 3 option on this, the way full i follow you request, like ingridiens for siding, and store to buy it, its a
option 1. color: blu+grey+accent black and white. not really modern but this according to your request
option 2. full modern, no blue color in it, thats gradation of grey, white and black
option 3. similar like option 2. just a different motif.
hope you like this sir, won or not, but thankyou for this competition. have a great day