what color is the sea / blank notebook

Write to tell me, what color is the sea today? Have you ever seen how the sea and sky look different every day? https://live.staticflickr.com/65535/52452706955_4225632b6a_z.jpg https://live.staticflickr.com/65535/52452779398_c465d2eb60_z.jpg Where I live, it's 10 minutes to the beach, I once took watercolors to the beach to sketch in good weather, It turns out that the color of the sea is different every day, the appearance of the sky will affect the color of the sea, I often look like this when I paint, but it looks completely different when I finish it. This is probably the beautiful part of nature. https://live.staticflickr.com/65535/52452259506_d0f4f18145_z.jpg https://live.staticflickr.com/65535/52452532509_26670038ea_z.jpg The same coastline, different seasides, different time periods, Both the sea and the sky are unique. -------------------------------------------------- ----------------- In addition to the cover of the notebook, there is a picture of income sketching, There are also several pages hidden on the inner pages to accompany you through the writing time. https://live.staticflickr.com/65535/52451736592_af9c859d6f_z.jpg https://live.staticflickr.com/65535/52452532184_76e085567f_z.jpg And the two pictures are completely different! __size__ 14.5x20.6 cm (slightly smaller than A5) __Hand account material__ Cover / 200lb Italian Watercolor Paper Inside Pages / 100lb White Dorian 48 pages __Binding method__ Saddle studs / can be fully unfolded