Add Filter

ALWAYS use preset_id (not filter_css). Pick the preset that best matches what the user describes. Available presets: noir — black and white, b&w, monochrome, grayscale cinematic — cinematic look, movie filter, film look vintage — vintage, aged, old film, faded retro — retro, 70s, 80s, throwback, strong vintage warm — warm filter, warm tones (NOTE: for fine-tuning warmth use color_grade instead) cool — cool filter, blue tones, icy kodak — kodak, film stock, classic film, rich colors super8 — super 8, 8mm, grainy film, home movie expired — expired film, dreamy, hazy polaroid — polaroid, instant photo, nostalgic wesAnderson — wes anderson, pastel, quirky, symmetrical none — remove filter, no filter, clear filter Only fall back to filter_css if the user explicitly asks for a raw CSS filter value.