Could home improvement retailers spruce up and electronics stores power down in light of the latest industry sales data? Retail trade figures out this week from the Census Bureau run positive for the likes of Home Depot (HD) and Lowe's Companies (LOW) but not so for Best Buy (BBY) and RadioShack (RSH), says RBC Capital Markets analyst Scot Ciccarelli, in a research note Friday. He adds that falling gas prices could benefit auto parts sellers,