You can perform a find in that field for "green"
Right but what if I wanted a layout that showed a total count how many blue how many yellow and represented it in a number?
You can do this with relationships and the count(relatedtable::CheckboxField) function in a calculation field.
Place "Green" in a field--this can be a text field or a calculation field that returns "Green". Field can be global or local.
Define a relationship linking this field to your checkbox field. This can be a selfjoin or from a different table.
Now put the above calculation in place and you'll get a count of all records where "green" is checked.
Additional enhancement: If you don't want to create a whole series of separate calculations and relationships, create a new table with two fields, Color, ColorCount. Link Color to your check box field and define ColorCount as the above calculation. Create one record for each value in your checkbox field, storing the matching value in Color.
Now display these records in a portal, or on a list/table view layout based on the new table.