Havel Riverside Free designs Customize this free red, pink, orange and blue online card template to match your event and send online save the dates or invitations including monitoring and guest management. Havel Riverside - Free designs. Minimalist modern invitation card design with colourful red, pink, orange and blue stripes for text. Havel Riverside - Free designs. Colorful Save the Card with red, pink orange and blue stripe each one as space for text box.