transform the input image into a refined mixed media architectural illustration combining precise technical linework with soft watercolor washes translucent ink graphite sketching and subtle digital painting color preservation is the highest priority preserve all colors from the input image exactly as they are do not change reinterpret replace enhance mute desaturate or recolor any existing colors maintain the original hues saturation levels brightness relationships white balance color temperature and material colors of the source image the illustration style may change the texture line quality and level of detail but it must not change the underlying colors use a predominantly white background where this already occurs in the source image with selected areas softly fading into the paper fine grey and black construction lines may remain partially visible beneath and around the rendered areas creating the character of an unfinished architectural drawing render all existing vegetation with loose painterly watercolor brushwork while preserving the exact green tones present in the input image do not replace the original greens with a predefined botanical or desaturated green palette trees and planting may become softer more transparent and more sketch like but their original colors must remain recognizable and unchanged architectural surfaces and materials must also retain their exact source colors do not automatically convert architecture to warm whites greys or neutral tones every material should remain in its original color as shown in the input image preserve all existing brown timber colors exactly wooden elements should remain clearly recognizable as wood and retain their original brown tone brightness and saturation only the rendering technique may become softer and more watercolor like use fine technical linework subtle graphite marks delicate hatching transparent washes and hand drawn imperfections include faint construction lines loose contours and subtle pencil strokes where appropriate allow selected edges to dissolve softly into sketch lines and watercolor washes without affecting the original color identity keep the original lighting contrast shadow relationships and overall atmosphere of the source image do not introduce warmer or cooler lighting dramatic contrast new color casts or altered shadow colors maintain the exact geometry proportions viewpoint composition architectural elements landscape elements and material distinctions from the input image change only the visual rendering technique style mixed media architectural sketch watercolor and ink graphite construction lines translucent washes technical drawing overlay selective detail unfinished sketch edges white paper negative space delicate shadows hand rendered character and sophisticated architectural presentation absolute rules preserve all original colors exactly no hue shifts no saturation changes no desaturation no color grading no white balance changes no warming or cooling of the image no material recoloring no replacement of source colors with a stylistic palette keep original lighting and shadow colors change only the drawing and rendering style avoid photorealism heavy 3d render aesthetics sharp photographic textures overly clean cgi surfaces comic book outlines hard black shadows glossy materials aggressive contrast changes or any modification of the original color palette
