user: Question: How many school colors is there for the main campus location of Highland?
Columns: ['Institution', 'Main Campus Location', 'Founded', 'Mascot', 'School Colors']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['Allen Community College', 'Iola', 1923.0, 'Red Devils', 'Scarlet & Black']
SQL:

assistant: SELECT COUNT("School Colors") FROM "Table" WHERE "Main Campus Location" = 'Highland';