Crossword puzzle clue "item with features that begin this puzzle's four longest answers"

Item with features that begin this puzzle's four longest answers

Org. that has four teams with non-plural nicknames, which begin this puzzle's four longest answers

Shades of it begin this puzzle's four longest answers

Spars in the ring, and features of the four longest puzzle answers

Features of some sports cars, and what this puzzle's four longest answers have in common

Any of five that begin this puzzle's longest answers

How many letters are in the longest answers in this puzzle - or how many of these answers there are

Number of times this puzzle's theme word appears diagonally in the grid (to complete the puzzle, shade those words plus the Down answers that begin where they meet)