CREATE TABLE table_20331 ("No." FLOAT, "Name" TEXT, "Livery" TEXT, "Locomotive type" TEXT, "Wheel Arrangement" TEXT, "Builder" TEXT, "Year built" FLOAT, "Status" TEXT)

How many locomotives have a livery that is highland railway green
SELECT COUNT("Name") FROM table_20331 WHERE "Livery" = 'Highland Railway green'
SELECT COUNT("Name") FROM "table_20331" WHERE "Livery" = 'Highland Railway green'