advertising backdrop background blended bright center centre color colour communicating communication design detailed details image inform information informing invitation lettering letters light lines medical medical-care medical-services opportune opportunity patients potential promotion promotional services sign style surface surgery texture textures variety various vibrancy vibrant words access advice announcement appearance colored coloring colors coloured colouring colours declaration detail direction informative message notice notification signs surfaces welcome word bleu border C4U card cards celebration ChIandra4U colorful decoration drawing free friendship fun funny graphic happiness illustration season seasons stock summer template tradition vector black