CREATE TABLE table_76446 ("Date" TEXT, "Event" TEXT, "City" TEXT, "Oil Pattern" TEXT, "Winner  ( Title # ) " TEXT, "Runner-up" TEXT, "Score" TEXT)

Name the Date which has a Oil Pattern of chameleon, and a Event of lake county indiana classic?
SELECT "Date" FROM table_76446 WHERE "Oil Pattern" = 'chameleon' AND "Event" = 'lake county indiana classic'
SELECT "Date" FROM "table_76446" WHERE "Event" = 'lake county indiana classic' AND "Oil Pattern" = 'chameleon'