                  let spreadSize = 12;
                        while (possiblePosArr.length > 1) {
                            const maskColors = frontContext.getImageData(maskCenterL - spreadSize, maskCenterT - spreadSize, maskCenterR - maskCenterL + spreadSize * 2, maskCenterB - maskCenterT + spreadSize * 2).data;
                            for (let item of possiblePosArr) {
                                const grayMask = [0, 0, 0, 255 * item.alpha];
                                const mixedColors = m