bible candle dark darkness flame light light source reading text book block fire flat fume mist Poland puff smoke town warsaw burn burning element ember embers fireplace heat hot wood backyard barbecue charcoal coal food grill pork roast summer bright colored colorful flames flow flowing green purple scarfs veil yellow abstract background event fur gas Geological phenomenon pollution blue chimney elements industrial industry pipe place refinery saavem sky black camp-fire danger hexagon pictogram red security sign ashes heating logs open fire owen