Downtown Johnson City is about to get a lot more colorful with a new mural.The white wall on the corner of Commerce and Main Streets facing the Market Street parking lot will soon pay homage to Johnson City’s history.“We’re planning to feature bluegrass musicians, bluegrass instruments, and quilts of particular patterns to kind of get that Appalachian craft theme present there as well,” said Cheyenne Kumbhare, Johnson City Public Works Market Analyst.