the building has remained unaltered with the original windows used for air ventilation , heart pine flooring for endurance , working fireplaces for heat and most of the plaster surviving over 400 years of teens sterling studies the first window that overflows with a set of green thick velvet curtains beside the next tall window of white sheer drapery then a geometric electric blue circles on linen ; a heavy red silk ; striped black and white sheer , a yellow and green cotton wool plaid , a pink solid silky rayon floral flowers of cotton ; a baby blue background with tan birds and brown tree branches in burlap ; a hot pink flowers on a white background with purple fans ; a crimson red paisley print on silk ; a set of navy blue and white stripes on cotton ; a set of lavender burlap curtains , and the last window treatment mint green lace sheer curtains while pondering what the heck decorated this school .