NEWSPhotos: Brewers prepare Miller Park for opening daySteve Ems of the Milwaukee Brewers grounds crew anchors a tarp over the home plate area. Grow lights are being used on the field to help turn the grass green faster in high traffic areas of the field. Work is being done throughout the ballpark for opening day April 3 against the Colorado Rockies.Michael Sears / Milwaukee Journal SentinelTom Berti of Red Cedar Steel Erectors of Mequon and Menominee uses a grinder to smooth out a weld where new steel supports were installed to hold new signage.Michael Sears / Milwaukee Journal SentinelJason Chin of Perlick (right), a maker of beverage dispensing equipment, has some models tested by Bob Starasinich of Underwriters Laboratories.Michael Sears / Milwaukee Journal SentinelContractors put up displays along the concourse at Miller Park.Michael Sears / Milwaukee Journal SentinelJeffrey Greer (foreground) and Robert Howard of Performance Cleaners sweep up in the visitors' dugout.Michael Sears / Milwaukee Journal SentinelA worker cleans windows in the press box section and other areas at Miller Park.Michael Sears / Milwaukee Journal Sentinel