There are more than 2,400 traffic signal control cabinets in Houston: Big, drab gray boxes that sit on the side of the road. Thanks to the Mini Murals project, dozens of them have been covered by bright, colorful mini murals. Elia and Noah Quiles of UP Art Studio launched the project and enlisted local artists to create site-specific public art. Among the participating artists are Anat Ronen, DUAL, Wiley Robertson, Jessica Guerra and GONZO247. Guerra's mini mural, at the corner of West Bellfort and Hillcroft, is a bright yellow box with lilac and purple flowers. W3r3on3 (aka) Gelson Danilo Lemus's painting, at the corner of West Fuqua and White Heather, is a black-and-white portrait of Dr. Martin Luther King, Jr. Other boxes include a bright orange frog on a box covered in raindrops and a loteria card showing two fútbol players. At the cost of just $2,500 per box, which covers artist fees, supplies, equipment and project management, Mini Murals is set to grow across the city, adding another 100 boxes in 2016.