Sanding - Part 1. Sanding your hardwood floors takes three sessions with progressively lighter grit sandpaper. To begin, use a coarse 30-40 grit, then a medium 50-60 grit and finally a fine 80-100 grit. For flat floors, use a random orbital sander.
With flying colours is a popular idiom of the English language. The phrase's origins relate to ship flags.
With flying colours has many variations preceding it, such as to pass..., came out..., and came through..., but all have the same meaning derived from the literal allusion, to be triumphant or victorious, honorable or to be publicly successful.