Create a vibrant and playful banner for a riddles YouTube channel specializing in short, mind-teasing content. The background should burst with a mix of vivid colors like electric blue, neon green, and hot pink, creating an eye-catching display. Incorporate various symbols of mystery, such as puzzle pieces, question marks, keys, and locks. Display silhouettes of people scratching their heads or holding magnifying glasses in an animated, whimsical style. The channel's name, 'RiddleMania,' should be prominently featured in a funky, bold font that stands out against the lively background.

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))