Lottery retailers shall display lottery point-of-sale material approved by the director in a manner which is readily seen by and available to the public. Upon request, the director may make additional point-of-sale materials available to lottery retailers at no cost or at such costs as determined by the director. Lottery retailers are responsible for the maintenance and security of point-of-sale and other materials or signage provided by the lottery and accepted by the retailer. Lottery retailers may use and/or display other promotional and point-of-sale material, provided, it is in accord with the image and/or theme established by the lottery including, but not limited to, design, script style, color scheme, and logo; and it is consonant with the dignity of the state. The director may require removal of objectionable material and/or its use be discontinued.