The background texture is created by colored linesThe background texture is created by colored lines
Sopwith triplane fighter triplane of the first world warSopwith triplane fighter triplane of the First World War
The first spring grass appeared , but the leaves on the trees are still sleepingThe first spring grass appeared , but the leaves on the trees are still sleeping
Green structure of tangled lines resembling the shape of plantsGreen structure of tangled lines resembling the shape of plants