Create a pencil sketch of a mysterious character named "Nyx" who embodies the duality of light and darkness. Nyx has long flowing hair and wears a cloak that obscures half of their face, adding to the enigmatic aura. In the sketch, depict one half of Nyx's face and attire in vivid, vibrant colors symbolizing vitality, while the other half remains in detailed monochrome, accentuating the shadows and mystery surrounding Nyx. Let the contrast between the colored and monochrome parts highlight the character's internal conflict or complexity. Consider incorporating subtle elements such as wisps of shadowy tendrils intertwining with the vibrant colors to emphasize Nyx's dual nature. Feel free to add any additional details or embellishments that enhance the character's mystique and captivate the viewer's imagination.

verybadimagenegative_v1.3, ng_deepnegative_v1_75t, (ugly face:0.8),cross-eyed,sketches, (worst quality:2), (low quality:2), (normal quality:2), lowres, normal quality, ((monochrome)), ((grayscale)), skin spots, acnes, skin blemishes, bad anatomy, DeepNegative, facing away, tilted head, {Multiple people}, lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, worstquality, low quality, normal quality, jpegartifacts, signature, watermark, username, blurry, bad feet, cropped, poorly drawn hands, poorly drawn face, mutation, deformed, worst quality, low quality, normal quality, jpeg artifacts, signature, watermark, extra fingers, fewer digits, extra limbs, extra arms,extra legs, malformed limbs, fused fingers, too many fingers, long neck, cross-eyed,mutated hands, polar lowres, bad body, bad proportions, gross proportions, text, error, missing fingers, missing arms, missing legs, extra digit, extra arms, extra leg, extra foot, ((repeating hair))