private Color getColor(int row, int column, TerrainGridSystem tgs, Texture2D my_texture, List<Cell> myCells)
{
    int Nx = tgs.rowCount;
    int Nz = tgs.columnCount;

    int currentIndex = column + Nx * row;
    Vector3 centerCoord = tgs.CellGetPosition(myCells[currentIndex]);

    int texture_height = my_texture.height;
    int texture_width = my_texture.width;

    int dx_texture_size = texture_height / Nx;
    int dz_texture_size = texture_width / Nz;

    int pixel_coord_x = dx_texture_size / 2 + column * dx_texture_size;
    int pixel_coord_z = dz_texture_size / 2 + row * dz_texture_size;

    return my_texture.GetPixel(pixel_coord_x, pixel_coord_z);
}